I don’t have high hopes for the legislation — the House majority is still the House majority — but the Obama White House’s support for the Respect For Marriage Act is the latest in a series of encouraging steps on civil rights.

President Obama is throwing his support behind the Respect For Marriage Act – the bill to repeal the 1996 Defense Of Marriage Act, which banned the federal government from recognizing same-sex marriage even for couples married under state law.

The president has “long called for a legislative appeal for the so-called Defense of Marriage Act, which continues to have a real impact on families,” White House spokesman Jay Carney told reporters at Tuesday’s briefing. He said the president “is proud” to support the Respect For Marriage Act, “which would take the Defense of Marriage Act off the books for once and for all.”

The bill was introduced in the Senate by Sens. Dianne Feinstein (D-Calif.), Patrick Leahy (D-Vt.), and Kirsten Gillibrand (D-N.Y.).

This comes the same year as the Obama administration’s decision to stop trying to defend DOMA against federal court challenges.

What’s more, it’s a heartening piece that fits into a larger mosaic. After two-and-a-half years, President Obama has successfully repealed the “Don’t Ask, Don’t Tell” law; expanded federal benefits for the same-sex partners of executive-branch employees; signed the Hate Crimes Prevention Act into law; cleared the way for hospital-visitation rights for same-sex couples; lifted the travel/immigration ban on those with HIV/AIDS; ordered the Federal Housing Authority to no longer consider the sexual orientation of applicants on loans; expanded the Census to include the number of people who report being in a same-sex relationship; and hired more openly gay officials than any administration in history.

There have also been more symbolic gestures, including the White House hosting an event to honor the 40th anniversary of the Stonewall riots, announcing the first-ever transgender presidential appointee, nominating the first openly-gay man to serve on the federal judiciary, honoring same-sex couples in his Mother’s Day and Father’s Day proclamations, recording a video for the “It Gets Better” Project, and hosting Gay and Lesbian Pride Month events at the White House.

And today, the president has offered his well-timed endorsement of the Respect For Marriage Act.

I realize there are still a sizable number of people in the LGBT community who are unsatisfied with the pace of change, and consider President Obama someone who has ignored, and even betrayed, their interests. Some have even vowed not to lift a finger to help with the president’s re-election effort.

I suspect many social-conservative activists, furious with the steps Obama has already taken to advance civil rights for the LGBT community, must find this inexplicable.

Steve Benen

Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.