Herman Cain has threatened he would overturn the U.S. Supreme Court if it attempted to rule against the Defense of Marriage Act (DOMA).

The 65-year-old Cain made his remarks Saturday at the Thanksgiving Family Forum in Des Moines, Iowa. Also attending the event were Newt Gingrich, Rick Santorum, Rick Perry, Ron Paul and Michele Bachmann. Former Massachusetts Governor Mitt Romney was invited but did not attend. Also not in attendance was former Utah Governor Jon Huntsman, who has not placed an emphasis on Iowa.

Moderator Frank Luntz conversed with the candidates as they gathered around a dinner table festooned with pumpkins and fall leaves. About 3,000 people attended the forum.

DOMA is the 1996 law that bars federal agencies and the military from recognizing the legal marriages of gay and lesbian couples.

When Brian Brown, the president of the National Organization for Marriage (NOM), asked the candidates what would be their response as president if the nation's highest court overturned the law, Cain answered: “I would lead the charge to overturn the Supreme Court if they overturned DOMA. Whether that was new legislation coming out of the Congress like Representative Bachmann said. The United States Congress both pass laws, so if they did overturn DOMA that charge I would lead to reverse that.”

(Related: Ron Paul out of step on gay marriage amendment at Christian forum.)