District of Columbia Mayor Adrian M. Fenty signed into law a gay marriage bill on Friday, sparking a renewed push by opponents to ban the institution in the city.

Fenty, 39, signed the bill at a public ceremony at All Souls Church, a gay-friendly Unitarian Universalist congregation located in the diverse neighborhood of Columbia Heights.

Robert Hardies, All Souls’ senior pastor, told the Washington Post that the church was “honored to be able to host this historic bill-signing.”

Immediately after passage, the National Organization for Marriage (NOM), the nation’s most vociferous opponent of gay marriage, broadcast an appeal to members to contact lawmakers on the issue.

“It’s up to you and me to force Congress to deal with the issue!,” the organization said in an email to members. “Every member of Congress needs to hear from his or her own constituents that this is an urgent civil rights violation taking place in the District of Columbia that requires Congressional attention! Send your message to Congress today.”