Maggie Gallagher of the National Organization for Marriage (NOM) says she sees herself urging Congress for a federal gay marriage ban after the Supreme Court knocks down state bans.

NOM president Brian Brown and former House Speaker Newt Gingrich have also renewed calls for placing a gay marriage ban in the U.S. Constitution after a federal judge ruled California's gay marriage ban, Proposition 8, unconstitutional.

Gallagher, who serves as president of the anti-gay marriage Institute for Marriage and Public Policy and as board chair of NOM, made her remarks to the New York Times.

“We are also looking for opportunities to … lay the groundwork for a federal marriage amendment, if the Supreme Court refuses to respect people's right to vote for marriage,” she said.

Congress first proposed a constitutional amendment banning gay marriage in 2002. The measure slowly gained steam over the years and nearly won approval four years later.

Such a measure would end gay marriages in states where it is already legal.

Gingrich called the ruling “an outrageous disrespect for our Constitution” in calling for Congress “to act immediately to reaffirm marriage as a union of one man and one woman as our national policy.”

At a Saturday NOM rally in Atlanta, Brown told about a dozen supporters that the ruling threatened their cause.

“McCain said before about the federal marriage amendment that this wasn't the time, but if a real threat arose, then yes,” he said. “Well, the time is now!”