Constitutional Amendment 2 of 2004 is an amendment to the Missouri Constitution that prohibited same-sex marriages from being recognized in Missouri.

The Amendment passed via public referendum on August 3, 2004, with 71% of voters supporting and 29% opposing.

[4] The text of the adopted amendment, which is found at Article I, section 33 of the Missouri Constitution, states: That to be valid and recognized in this state, a marriage shall exist only between a man and a woman.

[5]This amendment was voided by the 2015 decision of the United States Supreme Court in Obergefell v. Hodges, which overturned statewide bans on same-sex marriage nationwide.

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