Same-sex marriage in Belgium 14 December and published on 23 December 1999 made the Act of statutory cohabitation go into effect on 1 January 2000. During 1999, the PS (French-speaking Social Democrats) and Ecolo (French-speaking Greens) also announced they agreed to legalise same-sex marriage. At that point, the only remaining party in Government that opposed same-sex marriage was the French-speaking liberal PRL (later merged into MR), mainly because it was opposed to adoption rights for same-sex couples. PRL agreed not to block same-sex marriage if adoption rights are excluded. As the first same-sex marriage in the Netherlands was performed on 1 April 2001, the
Same-sex marriage in Oklahoma which bans same-sex marriage and any "legal incidents thereof be conferred upon unmarried couples or groups". Several same-sex couples have been issued licenses through the Cheyenne and Arapaho Tribes, a sovereign nation within the borders of Oklahoma, since 2013. The Cherokee Nation and the Osage Nation also perform and recognize same-sex marriages. The latter approved the move after a 2017 referendum found majority support for same-sex marriage. On November 3, 2004, the day after Oklahoma voters overwhelmingly approved a constitutional amendment banning same-sex marriage, two lesbian couples, Mary Bishop and Sharon Baldwin, and Susan Barton and Gay Phillips, filed a