The Constitution’s allocation of war powers between the legislative and executive branches is a classic example of the separation of powers.REF The Congress has the power to declare war but cannot fight the war on its own. The President, as commander in chief of the Army and Navy, has (and has uniformly claimed) the authority to use military forces abroad in the absence of specific prior congressional approval.REF This authority derives from his constitutional responsibility as commander in chief and chief executive for foreign and military affairs. Without money from Congress, however, the President has no ability to fight those conflicts, nor does he have the authority to appropriate funds to pay for those military conflicts on his own.

This tension between the legislative and executive branches was purposeful, as the Founders anticipated the grave significance of the country’s going to war. The United States was born of war, and the Founders knew that in the likely event the country would have to engage in future wars, the decision to take the country to war should be allocated between two coequal branches of government.

Like many other provisions in the Constitution, the Declare War Clause is brief. It authorizes Congress “To declare War.”REF The Constitution does not dictate how Congress should declare war, just that it has the authority to declare war. It authorizes Congress to “raise and support Armies,”REF “provide and maintain a Navy,”REF and “make Rules for the Government and Regulation of the land and naval Forces”REF and provides “for calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions.”REF The President, on the other hand, “shall be Commander in Chief of the Army and Navy of the United States.”REF There is one, and only one, commander in chief of the armed forces, and he enjoys capacious authority to defend the nation.REF

According to advocates of presidential power, the Declare War Clause does not address the power to begin actual hostilities.REF It does not limit presidential war power.REF Rather, they argue that it gives Congress the authority to alter legal relationships between subjects of warring nations and trigger certain rights, privileges, and protections under the laws of war.REF Other scholars contend that the Declare War Clause limits presidential war power by giving the legislature the sole authority to begin an offensive war.REF One interpretation of the clause is that it requires Congress to issue a formal declaration of war before the United States may begin hostilities.REF

Whatever one’s viewpoint on the matter may be, the Constitution is silent with respect to how wars are terminated and therefore leaves unanswered a host of important questions.

• Who has the authority to end an authorized war, be it a formal wartime declaration or a specific authorization for the use of military force?REF
• If Congress repeals its own war authorization, does that act alone end the war, or must the President agree?
• What happens if Congress repeals its own war authorization and the President vetoes the legislation and the Congress cannot override his veto?
• What value is there, then, in Congress’s publicly debating war powers?
• What message does such a debate send to the American public?
• Does the absence of such a debate affect the American people and our warfighters and influence our allies or enemies?
• Does Congress have an obligation, if not legally at least morally, to debate war powers periodically when the country is at war?

Against this backdrop, Senators Tim Kaine (D–VA) and Todd Young (R–IN) have introduced a joint resolution to repeal two congressionally authorized war authorizations against the country of Iraq:REF the 1991 Authorization for Use of Military Force (AUMF) Against Iraq ResolutionREF and the Authorization for Use of Military Force Against Iraq Resolution of 2002.REF They claim that the Iraq AUMFs make no sense, serve no operational purpose, run the risk of future abuse by a President, and help to keep the nation on a permanent war footing.REF They also claim that Congress has a vital role not only in declaring a war, but also in ending one.REF

The preamble to their resolution claims, among other things, that the repeal of both war authorizations would not affect ongoing military operations, which are conducted and authorized by the 2001 Authorization for Use of Military ForceREF passed in the wake of the September 11, 2001, terrorist attacks, and would have no impact on the 2001 AUMF itself.

There are consequences to congressional inaction, whether it is failure to pass appropriations on time, delaying decisions on major infrastructure programs, failure to fund health insurance programs, or failure to reauthorize vital national security or defense programs on time. The consequences are real and have devastating effects. Congressional failure to authorize force against ISIS, for example, or refusal to repeal outdated war authorizations has consequences. It affects the relationship between the legislative branch and the executive branch, with the former ceding power to the latter. Congressional acquiescence seemingly relieves the legislative branch of the responsibility to decide whether to authorize war or repeal outdated authorizations at a time when the American people, the military, our allies, and enemies need to hear from Congress on the issue of war and peace.

There is great value in our democratic republic for Congress to debate war powers, and just as there is value in debating whether to authorize war, there is the concomitant value in debating the repeal of war authorizations passed years or decades ago, especially when the object and purpose of those war authorizations have been accomplished. Debating and then repealing those vestigial war authorizations is a matter of congressional hygiene and gets the Congress back in the business of exercising its Article I muscles.

The 1991 Iraq Authorization for Use of Military Force

The 1991 Iraq AUMF remains in place to this day, despite the fact that the primary purpose of that war authorization was accomplished decades ago. It is a vestigial war authorization. Senator Kaine calls it a “zombie authorization.”REF The use of the word “zombie” is colorful but nonetheless apt, as the concern is that this war authorization could come back to life years or decades after its primary purpose has been met and used by a future Administration for a purpose entirely disconnected and unrelated to the original purpose of the statute.REF Moreover, although the 1991 and 2002 Iraq AUMFs are stand-alone war authorizations, they are connected to each other in a way that the other 40-plus AUMFs and congressional declarations of war are not.

The 1991 Iraq AUMF, which remains in effect, references several United Nations Security Council Resolutions (UNSCRs) in the text of the statute and states that the “President is authorized…to use United States Armed Forces pursuant to United Nations Security Council Resolution 678 in order to achieve implementation” of 11 other U.N. Security Council Resolutions.REF Understanding those UNSCRs is essential if one is to understand both why the purpose of the 1991 Iraq AUMF has been accomplished and its close relationship to the 2002 AUMF.

In late May of 1990, Iraqi President Saddam Hussein accused Kuwait and the United Arab Emirates of overproducing oil, threatening the economic viability of Iraqi oil exports. In July, Hussein accused Kuwait of stealing Iraq’s oil, and on August 2, 1990, he ordered an invasion of Kuwait. Approximately 140,000 Iraqi soldiers, supported by 850 tanks, entered and occupied Kuwait. Iraqi aircraft bombed Kuwait City and air bases in the country.REF The invasion was condemned by Saudi Arabia and Egypt, as well as by the United States and other Western nations.

The day of the invasion, the United Nations Security Council passed UNSCR 660,REF which determined that the invasion of Kuwait was a “breach of international peace and security,” condemned the invasion, and demanded an immediate withdrawal of all Iraqi forces. UNSCR 660 was the first of several Security Council resolutions that condemned Iraq’s unlawful invasion and demanded a complete withdrawal from Kuwait.

In response to the invasion, President George H.W. Bush ordered the U.S. Navy to deploy ships to the Persian Gulf on August 3, 1990. The next day, on August 4, Saddam Hussein appointed Alaa Hussein Ali as Prime Minister of the Provisional Government of Free Kuwait, and Iraq declared that Kuwait was the 19th Governorate of Iraq.

On August 6, 1990, the Security Council passed UNSCR 661, which reaffirmed UNSCR 660 and expressed “deep concern” that it had not been implemented. The resolution expressed the council’s determination to bring the invasion and occupation of Kuwait by Iraq “to an end and to restore the sovereignty, independence and territorial integrity of Kuwait.”REF The same day, United States Secretary of Defense Richard B. Cheney visited the King of Saudi Arabia to discuss sending U.S. troops to the region.

On August 7, 1990, the United States launched Operation Desert Shield and deployed approximately 15,000 troops, Navy ships, and military aircraft to the Kingdom of Saudi Arabia. The United States Air Force sent 48 F-15 fighters of the 1st Fighter Wing from Langley Air Force Base to Saudi Arabia, where they immediately began to patrol the Saudi–Kuwait–Iraq border areas.REF

On August 9, 1990, the Security Council passed UNSCR 662, which expressed alarm at Iraq’s declaration of a “comprehensive and eternal merger” with Kuwait and demanded that Iraq immediately withdraw, end its occupation, and “restore the authority of the legitimate Government of Kuwait.”REF It also determined that the “annexation of Kuwait by Iraq under any form and whatever pretext has no legal validity, and is considered null and void;” urged other states, organizations, and agencies not to recognize that annexation; and demanded that Iraq rescind its actions.REF Also in August, the League of Arab States met in Cairo to condemn the invasion and called on Iraq to withdraw its troops.REF

On August 18, 1990, the Security Council, upping the diplomatic pressure once more, passed UNSCR 664, which demanded that Iraq permit the immediate departure from Kuwait and Iraq of third-country nationals; grant immediate and continuing access of consular officials; demanded that Iraq take “no action to jeopardize the safety, security or health of such nationals;” and reaffirmed the previous Security Council resolutions.

Despite U.N. condemnation, Arab League pressure, and the growing presence of U.S. and other military forces in the region, however, Iraq continued to occupy Kuwait and conduct offensive military operations. On August 20, Iraq detained 3,000 Americans and 83 British citizens in Iraq and Kuwait. President Bush condemned the act and said the Americans and British being detained “are, in fact, hostages.”REF

What followed was a succession of Security Council resolutions, each of which is referenced in the 1991 Iraq AUMF and summarized below:

1. UNSCR 665, calling on those member states cooperating with Kuwait that are deploying maritime forces to halt all inward and outward maritime shipping in order to inspect and verify their cargoes.REF
2. UNSCR 666, noting (among other provisions) that it may be necessary to provide food to civilians in Iraq and Kuwait in order to “relieve human suffering” and that Iraq remains fully responsible under international humanitarian law, including the 4th Geneva Convention, to protect civilians.REF
3. UNSCR 667, which, after noting that Iraq is a party to the Vienna Convention on Diplomatic Relations of April 18, 1961, and the Vienna Convention on Consular Relations of April 24, 1963, condemned Iraq for ordering the closure of diplomatic and consular missions in Kuwait, as well as its decision to withdraw the privileges and immunities of those missions; condemned the acts of violence against diplomatic missions and their personnel in Kuwait; and demanded the immediate release of nationals and foreign nationals.REF
4. UNSCR 669, which reaffirmed UNSCR 661 and acknowledged the fact that “an increasing number of requests for assistance have been received under the provisions of Article 50 of the [United Nations] Charter.”REF
5. UNSCR 670, which reaffirmed UNSCRs 660, 661, 662, 665, 666, and 667; condemned continued occupation of Kuwait and Iraqi forces’ treatment of Kuwaiti nationals; confirmed that UNSCR 661 applied to all means of transport including aircraft; decided that all states shall deny permission to any aircraft destined to land in Iraq or Kuwait to overfly their territory except under certain conditions; and increased sanctions against Iraq.REF
6. UNSCR 674, which reaffirmed UNSCRs 660, 661, 662, 664, 665, 666, 667, and 670; stressed the urgent need for immediate and unconditional withdrawal of all Iraqi forces from Kuwait and restoration of Kuwait’s sovereignty, independence, and territorial integrity; condemned Iraqi authorities for taking third-country nationals hostage and for mistreating and oppressing Kuwaiti and third-country nationals; and other measures.REF
7. UNSCR 677, which expressed grave concern at the ongoing attempts by Iraq to alter the “demographic composition of Kuwait and to destroy the civil records maintained by the legitimate Government of Kuwait.”REF

By late fall of 1990, it was becoming increasingly clear that Saddam Hussein had no intention of complying with the United Nations resolutions and was convinced that the military buildup in the region was most likely a hollow threat by the West and its allies in the Gulf Region.

By October 30, 1990, President Bush had made the decision to push Iraq out of Kuwait by force if necessary.REF The President increased the U.S. force presence in the region and petitioned the United Nations for authorization to use force.REF By the end of the year, approximately 350,000 U.S. forces had been deployed to the area.REF

On November 29, 1990, the Security Council adopted UNSCR 678, which gave Iraq until January 15, 1991, to implement UNSCR 660 fully.REF In the absence of compliance by Iraq, paragraph 2 of UNSCR 678 authorized member states “to use all necessary means to uphold and implement resolution 660 (1990) and all subsequent relevant resolutions and to restore international peace and security in the area.”REF

On January 8, 1991, in a letter to congressional leaders, President Bush requested a congressional resolution supporting the use of all necessary means to implement UNSCR 678. The President stated that he was “determined to do whatever is necessary to protect America’s security” and that he could “think of no better way than for Congress to express its support of the President at this critical time.”REF

On January 14, 1991, both houses of Congress passed the Authorization for Use of Military Force Against Iraq Resolution, or Public Law (P.L.) 102-1.REF Subsection 2(a) authorized the President “to use United States Armed Forces pursuant to United Nations Security Council Resolution 678 (1990) in order to achieve implementation of Security Council Resolutions 660, 661, 662, 664, 665, 666, 667, 669, 670, 674, and 677.” Subsection (b) required the President, before exercising the authority granted in Subsection (a), to use diplomatic and “other peaceful means to obtain compliance by Iraq” with the Security Council resolutions and make a determination that those “efforts have not been and would not be successful in obtaining such compliance.”REF

Upon signing P.L. 102-1, President Bush issued a signing statement wherein he stated that “my request for congressional support did not, and my signing [P.L. 102-1] does not, constitute any change in the longstanding positions of the executive branch on…the President’s constitutional authority to use the Armed Forces to defend vital U.S. interests.”REF

Iraq refused to withdraw from Kuwait before the January 15, 1991, deadline, and on January 16, 1991, President Bush made the determination required by P.L. 102-1 that diplomatic means had not compelled and would not compel Iraq to withdraw from Kuwait. On January 18, he reported to Congress “consistent with the War Powers Resolution”REF that he had directed U.S. forces to commence combat operations on January 16, 1991.

Note that President Bush did not ask for “authorization” from Congress to use military force, but rather requested congressional “support” for his undertaking in the Persian Gulf.REF He believed that he had all the legal authority he needed to go to war, based not only on his authority under Article II of the Constitution, but also on applicable Security Council Resolutions. Recall that UNSCR 678 authorized member states “to use all necessary means to uphold and implement resolution 660 (1990) and all subsequent relevant resolutions and to restore international peace and security in the area.”

When asked at a press conference on January 9, 1991, whether he thought he needed P.L. 102-1 and whether, if it didn’t pass, he would feel bound by Congress’s decision, President Bush stated, “I don’t think I need it…. I feel that I have the authority to fully implement the United Nations Resolutions” as well as “the constitutional authority—many attorneys having so advised me.”REF President Bush’s statement was consistent both with his earlier signing statement and with the position taken by other Presidents regarding their constitutional authority under Article II of the Constitution to protect and defend the United States and use the military to do so, even absent express congressional authorization.REF

Allied air forces commenced an attack on military targets in Iraq and Kuwait. Ground forces were introduced on February 23, 1991, and Iraq was expelled from Kuwait four days later.REF Exactly 100 hours after ground operations began, President Bush suspended offensive combat operationsREF because the Iraqi Army was defeated and surrendering in droves.

The (Temporary) Cease-Fire. On April 3, 1991, the Security Council adopted UNSCR 687, which established conditions for a formal cease-fire suspending hostilities in the Persian Gulf.REF The resolution “reaffirmed the need to be assured of Iraq’s peaceful intentions” given Iraq’s invasion of Kuwait, its use of chemical weapons and ballistic missiles in unprovoked attacks, and reports that it had attempted to acquire materials to build nuclear weapons.REF Among the conditions for a formal cease-fire, the resolution specified that “Iraq shall unconditionally accept the destruction, removal, or rendering harmless, under international supervision,” of “[a]ll chemical and biological weapons and all stocks of agents and all related subsystems and components and all research, development, support and manufacturing facilities related thereto” and “[a]ll ballistic missiles with a range greater than 150 kilometres, and related major parts and repair and production facilities.”REF

On April 6, 1991, Iraqi officials accepted the terms set forth in UNSCR 687, and a formal cease-fire went into effect between Iraq, Kuwait, and the U.N. member countries that had cooperated with Kuwait under UNSCR 678, including the United States.REF Yoram Dinstein, a preeminent law of war scholar, stated that the “labelling of [Security Council] Resolution 687 as a permanent cease-fire is a contradiction in terms; a cease-fire, by definition, is a transition-period arrangement.”REF

It is important to note that Security Council Resolution 687 suspended but did not terminate the authority to use force under UNSCR 678.REF The cease-fire established by UNSCR 687 is similar to an armistice: Unlike a peace treaty, it does not terminate the state of war, but merely “suspends military operations by mutual agreement between the belligerent parties.”REF A cease-fire allows a party to a conflict to resume hostilities under certain conditions.REF

It could be argued that Iraq’s expulsion from Kuwait in February 1991 by the United States and the allied nations fully implemented the UNSCRs listed in P.L. 102-1 and that the authorization in Subsection 2(a) for the use of U.S. armed forces has therefore expired,REF but Iraq accepted the terms of the cease-fire agreement in name only, as it defied, eluded, and skirted the terms of agreement throughout the 1990s. As a result, the Administrations of Presidents William J. Clinton and George W. Bush maintained that P.L. 102-1 remained in effect.REF

The 2002 Iraq AUMF

In January 2002, four months after the September 11, 2001, attacks against the United States, President George W. Bush delivered the annual State of the Union Address.REF During his address, he outlined the national security threats to America and, in particular, singled out Iraq, Iran, and North Korea, calling them an “axis of evil.”REF They seek “weapons of mass destruction” and “pose a grave and growing danger” to the United States and our allies.REF

By the summer of 2002, less than a year after the September 11 terrorist attacks in the United States by al-Qaeda, the Bush Administration started to talk about the significant threat to U.S. interests posed by Iraq.REF As the war against al-Qaeda, the Taliban, and associated forces was being waged, President Bush met with congressional leadership on September 4, 2002, and stated that he would seek congressional support in the near future for action he deemed necessary to deal with the threat that Saddam Hussein’s regime posed to the United States.REF The President told congressional leaders that “Saddam Hussein is a serious threat. He is a significant problem. And it’s something that this country must deal with.”REF

On September 12, 2002, in a major speech to the U.N. General Assembly, President Bush outlined his concerns about Iraq’s actions since the end of the Gulf War in 1991.REF He reminded the international audience about Iraq’s numerous violations of U.N. Security Council resolutions since 1991, including those related to disarmament.REF

A week later, the White House proposed legislation to authorize the use of military force against Iraq. It was introduced as Senate Joint Resolution 45 on September 26 and debated by the Senate from October 3 to October 11. The Senate eventually passed House Joint Resolution 114, which was a slightly amended version of the Senate resolution, on October 11. President Bush signed the Authorization for Use of Military Force Against Iraq Resolution of 2002, also known as P.L. 107-243, into law on October 16, 2002.REF The 2002 Iraq AUMF did not include any geographical or temporal limitations.

On November 8, 2002, the Security Council passed UNSCR 1441, which gave Iraq one “final opportunity to comply with its disarmament obligations.”REF Failure to comply would result in “serious consequences,” which everyone understood to mean the use of military force.

The primary focus of the 2002 Iraq AUMF was the threat posed by Saddam Hussein and Iraq. Section (3) authorized the President to “use the Armed Forces of the United States as he determines to be necessary and appropriate to: (1) defend the national security of the United States against the continuing threat posed by Iraq; and (2) enforce all relevant United Nations Security Council Resolutions regarding Iraq.”REF

Note, however, that unlike the 1991 Iraq AUMF, which authorized the President to enforce previously adopted and delineated Security Council resolutions (mentioned by number in the statute), the 2002 Iraq AUMF arguably gave the President broader authority because it included “all relevant” resolutions.REF All relevant resolutions included the UNSCRs mentioned in the 1991 Iraq AUMF, thus tying the two Iraq AUMFs to each other.

It is also worth noting that the 2002 Iraq AUMF includes several paragraphs of findings before the operative text of the statute, each paragraph beginning with the word “whereas,”REF and that two of these paragraphs are relevant to the Trump Administration’s continued reliance on the statute.REF

The Bush and Obama Administrations relied on the 2002 Iraq AUMF to maintain the presence of U.S. armed forces and to conduct military operations in Iraq. The U.N. Security Council terminated the mandate of the U.S.-led multinational force in Iraq (MNF-I) as of December 31, 2008. President Barack Obama ordered all U.S. forces to withdraw at the end of December 2011, which they did.REF

President Obama’s move to withdraw all troops from Iraq at the end of 2011 was controversial.REF Many claim that by not leaving a standby or residual military presence, President Obama contributed to, and in fact created, the circumstances that led to the rise of the Islamic State (ISIS).REF Regardless of one’s views on the issue, as a legal matter, the 2002 Iraq AUMF remained on the books after the pullout and the rise of ISIS, through the degradation of ISIS and al-Qaeda, and remains current law.REF Some question its continued effectiveness.REF

Suffice it to say that when ISIS became a dominant force in Iraq in the years from 2012–2014, the Obama Administration took military action against ISIS and relied on the 2001 AUMF and the 2002 Iraq AUMF as domestic statutory authority. In its first (and only) National Defense Authorization Act (NDAA) Section 1264 war powers report,REF the Obama Administration stated that “as a matter of domestic law, the 2001 AUMF and the 2002 [Iraq] AUMF authorize the U.S. use of force against ISIL in Iraq.”REF Similarly, the Obama Administration wrote that, with respect to Syria, “[t]he 2001 AUMF and, in certain circumstances, the 2002 AUMF authorize the use of force in Syria against al-Qa’ida in Syria and ISIL.”REF

Oddly enough, even while it was engaged in military action against ISIS, including bombing ISIS fighters, the Obama Administration was signaling that it wanted to repeal the 2002 AUMF. On September 14, 2014, during the height of offensive military operations against ISIS, a senior Obama Administration official emailed a New York Times reporter when speaking about the legal authorities for military airstrikes against ISIS:

The President may rely on the 2001 AUMF as statutory authority for the military airstrike operation he is directing against ISIL. As we have explained, the 2002 Iraq AUMF would serve as an alternative statutory authority basis on which the President may rely for military action in Iraq. Even so, our position on the 2002 Iraq AUMF hasn’t changed and we’d like to see it repealed.REF

Two months before this email to The New York Times, Susan Rice, Assistant to the President for National Security Affairs,REF sent a letter to Speaker of the House John Boehner urging “the repeal of the outdated 2002 Authorization for Use of Military Force in Iraq.”REF

The Trump Administration has also submitted one NDAA Section 1264 war powers report.REF In the section entitled “The Domestic Law Bases for the Ongoing Use of U.S. Military Force,” the Administration acknowledges that the “primary focus of the 2002 AUMF” was “the threat posed by Saddam Hussein’s regime in Iraq.”REF However, the report states that the “express goals” have always been understood to authorize the use of force for the related dual purposes of helping to establish a stable, democratic Iraq and addressing terrorist threats emanating from Iraq.REF Finally, it adds that “the 2002 AUMF reinforces the authority for military operations against ISIS in Iraq and, to the extent necessary to achieve the purposes described above, in Syria and elsewhere.”REF

It is at best debatable whether the 2002 Iraq AUMF’s “express goals” have “always” been understood to include “helping establish a stable, democratic Iraq.” Nowhere in the statute does it say that the goal is to “establish a stable, democratic Iraq.” The closest the statute comes to that is where, in the findings preamble to the operative section of the statute, it references the Iraq Liberation Act of 1998, P.L. 105-338, which expressed the sense of Congress that it “should be the policy” of the United States to remove from power the “current Iraqi regime” and, according to the 2002 Iraq AUMF, “promote the emergence of a democratic government to replace the regime.”

Relying on a 1998 law that merely expresses the sense of Congress to promote the emergence of a democratic government in Iraq is odd indeed. A “sense of” provision is not legally binding because it is not presented to the President for his signature.REF Even if a “sense of” provision is incorporated into a bill—such as the 2002 Iraq AUMF—that becomes law, such a provision merely expresses the opinion of Congress or the relevant chamber.REF It has no formal effect on public policy and no force of law.REF

The fact that the findings include a sense of Congress to promote the emergence of a democratic Iraq back in 1998 is historically interesting, but it has no legal effect. The Trump Administration is at best overreaching when it relies on that finding to assert, as it does in its NDAA Section 1264 war powers report, that the dual purpose of the 2002 Iraq AUMF includes “establish[ing] a stable, democratic Iraq.”

The second part of the 2002 Iraq AUMF’s dual purpose as cited in the Trump Administration’s NDAA Section 1264 war powers report is to address terrorist threats emanating from Iraq. The findings do include several paragraphs that, arguably, remain just as factually true in the fall of 2019 as they were in 2002 when the statute was passed. Today, however, Iraq is a partner and hosts a small number of U.S. military and other government personnel to ward off the terrorist threat. Fortunately, Iraq is no longer a threat to the United States as it was under the Saddam Hussein regime or when ISIS controlled large areas of Iraq.

Finally, it is worth highlighting the language used by the Obama and Trump Administrations in their war powers reports when referencing the 2002 Iraq AUMF. The primary war authorization relied upon by the Bush, Obama, and Trump Administrations to prosecute the war against al-Qaeda, the Taliban, ISIS, and associated forces has been and continues to be the 2001 AUMF. Each Administration has relied and continues to rely on that war authorization as the bedrock domestic legal authority for wartime operations.REF It has no expiration date, no geographical limitation, and no sunset clause and applies to a discrete but ever-evolving group of terrorists with connections to the 9/11 attacks. Most important, it applies in Iraq.

Furthermore, repealing the 1991 and 2002 Iraq AUMFs would have no operational, legal, or prudential impact on the efficacy of the 2001 AUMF. The 2001 AUMF has been used by successive Administrations to go after evolving terrorist threats, including terrorist groups that did not even exist in 2001. Unless Congress decides to exercise the political courage to amend it to include ISIS and other associated forces, the 2001 AUMF will remain the bedrock domestic statutory authorization to fight terrorism.

In truth, however, the lack of political will to amend, repeal, or replace the 2001 AUMF has nothing to do with repealing two unrelated, outdated AUMFs.

The Obama Administration called the 2002 Iraq AUMF an “alternative statutory authority,” meaning, no doubt, that it was supplementary to or duplicative of the authority already existing in the 2001 AUMF. Similarly, the Trump Administration said the 2002 Iraq AUMF “reinforces” the authorities needed for military operations, suggesting without saying that the 2001 AUMF provides all the authority necessary for military operations against ISIS, al-Qaeda, or associated forces in Iraq.

There has been an open and vibrant debate about whether the 2001 AUMF covers ISIS, a terrorist organization that did not even exist when the 2001 statute was passed and has disavowed and formally broken away from al-Qaeda, the group that is covered by the 2001 AUMF,REF Yet both the Obama and Trump Administrations claim that the 2001 AUMF covers ISIS and associated forces.REF Efforts to amend that statute have failed, and that failure on the part of the Congress and the Obama Administration has infected the debate. As a result, Congress has shied away from the much-needed debate about whether to amend the 2001 AUMF to cover ISIS and associated forces.REF

Nevertheless, that failure to debate the all-encompassing 2001 AUMF should not blind Congress to the fact that the 2002 Iraq AUMF is no longer necessary and merely acts as a belt-and-suspender approach to war authorizations.

The Price of Inaction

Before addressing the issue of why it would be sound policy to repeal the two Iraq war authorizations, it is important to look back on the Framers’ understanding of how wars were to end. As we have seen, the constitutional separation of power and allocation of war power is between the Congress and the President. This power is likewise a shared power of Congress and the President, but in a somewhat different sense than the allocation of warmaking powers discussed above.REF

Debates at the Constitutional Convention reveal an understanding that Congress could not effectively end war simply by passing a resolution declaring a cessation of hostilities.REF The Framers believed that only a peace treaty signed by the President and ratified by two-thirds of the Senate could formally terminate a war and that the President’s role as protector and representative of the nation prevented Congress from ending a war without his consent.REF It is telling, as some scholars argue, that the Framers did not give Congress the sole power to terminate a war, just as they did not give it the sole power to begin one.REF

The Framers no doubt realized that politics, as an expression of the will of the people, would heavily influence decisions about whether to go to war and whether to terminate or end a war. Both decisions have potentially grave consequences that are borne by the very people who elected representatives to Congress in the first place.

Congress possesses the appropriations power and can employ such power to defund an authorized war.REF For Congress to exercise that power and cut off funds for an authorized war would effectively terminate the war as an operational matter because the President would not have the money to prosecute it, but it arguably would not terminate the war as a legal matter, at least according to some scholars.REF

In practice, throughout our nation’s history, all declared wars have ended in treaties,REF and some war authorizationsREF have ended in a variety of ways.REF For example, while President Dwight David Eisenhower’s Formosa AUMF was repealed by Congress in 1974,REF his 1957 Middle East Force ResolutionREF has never been repealed.

For obvious reasons, the 1991 and 2002 Iraq AUMFs are not likely candidates for treaties. Unlike the five previous declarations of war, which were against countries that we fought to victory in total war, the Iraq AUMFs were fought primarily against a country headed by a ruthless dictator who by his actions threatened the United States, its allies, and the world community with weapons of mass destruction. Saddam Hussein was captured in December 2013, was tried in an Iraqi court for crimes against humanity, and was hanged in December 2006. The current country of Iraq is an ally, and the United States and coalition partners work with the Iraqi leadership at their request to help safeguard their country from terrorist elements.

It therefore would not be practical to sign a peace treaty with Iraq. In fact, the object and purposes of the 1991 Iraq AUMF have been met, and the 2002 Iraq AUMF was directed, as a practical matter, at Saddam Hussein. A peace treaty is not in the offing, nor is one necessary. That leaves two options on the table: keep the Iraq AUMFs in place and risk the danger that some future Administration will try to rely on one or both of them to go back into Iraq or elsewhere, or repeal them and convince the President to sign the repeal bill.

Senators Kaine and Todd Young have been consistent and vocal proponents of repealing the two Iraq AUMFs. In their joint repeal resolution, there are several congressional findings of note. They point out that the 2002 Iraq AUMF only reinforces the 2001 AUMF; that repealing the Iraq AUMFs would “not effect ongoing United States Military operations;” that since 2014, the United States military forces have been operating in Iraq at the request of the government of Iraq for the sole purpose of supporting its efforts to combat ISIS; and that neither the 1991 nor the 2002 Iraq AUMF is being used as the sole legal basis for any detention of enemy combatants held by the United States.REF

Those proposed congressional findings are hard to dispute.

In November 2016, Senator Kaine took to the Senate floor to outline why he thought the Senate should debate the applicability of the 2001 AUMF to ISIS. He made a number of points, each of which has merit, and set the stage for his later efforts to repeal the Iraq AUMFs.

First, he noted that in Congress, there is a “tacit agreement to avoid debating this one in the one place that it ought to be debated: in the halls of Congress.”REF He noted that 80 percent of the Members of Congress were not in Congress when the 2001 AUMF was debated and said that “80% of us that were not here in 2001 have never had a meaningful debate or vote upon this war against ISIL.”REF It is time, according to Senator Kaine, for “Congress to reassert its rightful place in this most important set of decisions. Of all the powers that we would have as a Congress, I can’t think of any that are more important than the power to declare war.”REF

The same logic can and should be applied to the two Iraq AUMFs. Virtually no current Members of Congress were in office when the 1991 Iraq AUMF was voted on, and only a handful were in office for the 2002 Iraq AUMF. Congress has no stake in either war authorization.

There are consequences to congressional inaction on the 2001 AUMF, as Ben Wittes, cofounder of the influential Lawfareblog.com, has written.REF Congressional failure to engage constitutes a “meaningful congressional acquiescence in the President’s bold and relatively attenuated claim of authority to confront ISIS under the 2001 AUMF.”REF Again, the same logic applies to the Iraq AUMFs. Senator Young asserts that repealing the two Iraq AUMFs would act to “prevent the future misuse of the expired Gulf and Iraq War authorizations and strengthen Congressional oversight over war powers.”REF

Conclusion

There is little doubt that taking up the Kaine–Young resolution and holding a public debate, perhaps with expert witnesses, would educate Members of Congress and the public about war powers in general and whether there is a need for these two outdated, vestigial war authorizations. Congress has not had the political will or institutional stomach to be frank with the American people about the outdated and stretched-to-the-legal-brink 2001 AUMF.

The Obama Administration, to its credit, sent out senior Administration officials to give a series of public speeches explaining the legal basis for a whole host of national security–related topics, from drone strikes to detention policy to war powers. The Trump Administration has failed to follow suit, but speeches or no speeches, each Administration relied and continues to rely on an almost two-decade-old 2001 war authorization against a terrorist group that did not exist on September 11, 2001, has disavowed its connection to the group that was responsible for 9/11, and has at best a tenuous connection to the small number of terrorists covered under the 2001 AUMF.

Debating the repeal of the two Iraq war authorizations would allow Congress to re-engage its constitutional muscles on a topic about which Members should be flexing their muscles on a regular basis and that is not kryptonite to their political futures.REF A robust, fulsome debate would engage senior U.S. military leadership, senior U.S. diplomats, and law-of-war scholars and historians. It would require the Administration either to defend the use of the Iraq AUMFs or to agree that their usefulness has expired.

Finally, such a debate would be an act of congressional hygiene. Clearing (or cleaning) out the legislative closet of war authorizations that have long since been used up would be a first step in restoring the balance of power between Congress and the President with respect to the warmaking power.REF

Charles D. Stimson is a Senior Legal Fellow and Manager of the National Security Law Program in the Edwin Meese III Center for Legal and Judicial Studies, of the Institute for Constitutional Government, at The Heritage Foundation.