Americablog on a recurring problem and not just in DC:
Political homophobes aren't gay-hating in the traditional sense. In fact, publicly, most are strong supporters of LGBT equality. But, behind closed doors, many Democratic leaders, consultants, Hill staffers and the rest will vociferously argue that there is no political benefit to actually supporting LGBT rights. Political homophobia is rampant among some Democrats. In some ways, it's worse than blatant homophobia, since we think most Democrats are on our side. And outwardly, they are.
Political homophobia dictates policy in DC more than we'd like to think. I believe it's happening in the West Wing right now. I've been told by several people that while the president's chief of staff, Rahm Emmanuel, isn't a homophobe in the traditional way (he always voted the right way when he was in the House), he is always the first person to suggest that his colleagues (and now boss) avoid gay issues. He'd rather not deal with them because he thinks they're bad politics.
The New York Times discusses another angle on the problem:
The conflicting signals from the White House about its commitment to gay issues reflect a broader paradox: even as cultural acceptance of homosexuality increases across the country, the politics of gay rights remains full of crosscurrents.