§ 2-201.

Only a marriage between a man and a woman is valid in this State.

§ 2-502.

(a) In this section, "foreign marriage" means a marriage ceremony:

(1)  performed outside this State; and

(2) in which 1 or both of the parties were or are citizens of this State.

(b) Each clerk shall keep a foreign marriage record book in the clerk's office. The clerk shall record a foreign marriage when presented with either:

(1) a certificate of marriage signed by the individual who performed the marriage ceremony; or

(2) an official certified copy of a marriage record.

(c) On request, the clerk shall provide, under the seal of the court, certification of a foreign marriage in the same manner as the clerk issues certification of a marriage ceremony performed in this State.