Wallace stressed that she believes this issue, unlike others, will not "ignite a civil war in the party" because so many people have gay friends, co-workers, and family members even those who don't agree with their stance have a lot of "respect" for the disagreement.
In the latest ABC News-Washington Post polll on the topic from November a slim majority of Americans support gay marriage 51-47 percent, but amongst Republicans it is only 31-67 percent.
One of the signers, former Utah governor and Republican presidential candidate Jon Huntsman, Jr. voiced his support of same sex marriage last week, after opposing it during his presidential bid, in an article in the American Conservative titled "Marriage Equality Is a Conservative Cause."
"Conservatives should start to lead again and push their states to join the nine others that allow all their citizens to marry," Huntsman writes. "I've been married for 29 years. My marriage has been the greatest joy of my life. There is nothing conservative about denying other Americans the ability to forge that same relationship with the person they love. All Americans should be treated equally by the law, whether they marry in a church, another religious institution, or a town hall...Civil equality is compatible with, and indeed promotes, freedom of conscience."
Brian Donahue, a Republican strategist who did not sign the brief, believes that because the list includes so many prominent Republicans it represents a "significant step" for the party.
"It's a sign that there is a growing interest in the party to take steps to broaden its reach in defining what's acceptable to be part of this party," Donahue said. "It's healthy for members of the party to express their beliefs and opinions even when they may not be favorable by party leadership. It's healthy for the party to examine how it affects the lives of all Americans and it's a healthy discussion that's taking place within the party to say, 'What do we stand for?'"
Some Republicans fear the amicus brief could badly split the Republican Party. Hogan Gidley, a GOP strategist who has worked on the presidential campaigns of both Mike Huckabee and Rick Santorum, says the Republican tent should be "very broad," but this move by the group of Republicans will widen the schism in the party.