New York Representative Jerrold Nadler has vowed to continue pushing for repeal of the Defense of Marriage Act (DOMA), despite recent court rulings against the law.

In comments to gay weekly The Washington Blade, Nadler, a Democrat, stressed the need for legislative action against DOMA, which prohibits federal agencies from recognizing the legal marriages of gay and lesbian couples.

“The recent series of affirmative rulings in federal court give us a clear indication of where DOMA is ultimately headed, but we don't know if a Supreme Court decision would be enough to ensure federal recognition of same-sex marriages,” Nadler said. “We need to pass the Respect for Marriage Act because its certainty provision would enable legally married same-sex couples to receive federal recognition no matter which state they move [to].”

That “certainty provision” gives gay couples greater flexibility by guaranteeing that the federal government will recognize their marriages even if they live in a state where it is not legal.

Jon Davidson, legal director at Lambda Legal, said that without the provision “it may otherwise take years to sort out.”

The Respect for Marriage Act would make it clear “that the federal government would treat same-sex couples who got married in a jurisdiction that allowed it to be considered married for all federal purposes,” Davidson told the paper.

(Related: DOJ asks Supreme Court to hear New York DOMA challenge.)