At least 75 prominent Republicans, including two sitting members of Congress, will file a brief with the Supreme Court this week defending the idea that same-sex couples have a constitutional right to marry. The amicus brief will be filed on behalf of those looking to strike down Proposition 8, the California ballot initiative that banned gay marriage in the state, and the Defense of Marriage Act. Both cases will be argued before the Supreme Court next month. According to The New York Times, which got a copy of the brief, it even cites some cherished pro-conservative decisions (like the Citizens United case) as precedent to strike down any bans.
The DOMA case is technically being waged against the government, but it is really a fight against Republican members of the House of Representatives, since the Obama Administration is refusing to defend the law in court. The amicus brief is unlikely to sway the Justices, but they will also have support from another prominent conservative. One of the lead lawyers in the Prop 8 case is Ted Olson, who argued Bush v. Gore on behalf of the Republican winner before becoming his solicitor general. The decision to enshrine that argument in formal legal terms signals is a subtle, but important shift within the party—one that could someday lead to a dramatic split between the rank-and-file members and the GOP's leadership in Congress.
That is still "someday" though, and not today. Despite the symbolic importance of the brief it seems that most active members of the Republican Party are still leery about taking such a divisive stance. While the list has many recognizable names with impressive job titles, they were mostly high-ranking members of administrations that are no longer in power. Some of the biggest names also include Christine Todd Whitman, William Weld, and Jane Swift, who are all former governors and are unlikely to see another election. Most signees have made their support known in the past, and are not breaking wildly from their previous positions.
Jon Huntsman's decision to come out for marriage equality last week got a lot of headlines, but after his disastrous run for the presidency imploded, he's barely welcome in most Republican circles as it is. The biggest Republican icons to express support for gay marriage—Dick Cheney, Laura Bush, and Colin Powell—have not signed on, even though they won't be running for anything in the future either.
Even so, those who signed it risk being ostracized by the party they side with on most other matters. Just yesterday, National Organization for Marriage announced on their website that they would "do everything in our power to defeat any Republican who votes in favor of same-sex marriage." They even boast about ending the careers of three of the four Republicans who backed gay marriage in New York State's Senate. That might explain why Ileana Ros-Lehtinen of Florida and Richard Hanna of New York, were the only two sitting members of Congress to sign the brief. NOM may be overstating their ability to ruin elections for those on the wrong side of their issue, but it still remains a topic that most elected Republicans—even those who support equality—would prefer not to discuss.