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How the Supreme Court decides the Defense of Marriage Act could mean changes for how same-sex couples file taxes. But experts say checking off the "married" box on tax forms will be a mixed bag for some gay couples.

The justices on Tuesday hear a case that stems from a constitutional challenge to the California ban on same-sex marriage that was enacted by voter initiative in 2008. And on Wednesday, the court hears a challenge to the federal law that bars the U.S. government from recognizing gay marriages.

In 1997, DeGeneres chose a very public forum — her television sitcom — to announce, "I'm gay." The entertainer's career has tracked the seismic shift in public opinion on gays and same-sex marriage.

In a Yale Daily °µºÚ±¬ÁÏ editorial, Will Portman explains how he came out to his parents and how Sen. Rob Portman's views on gay marriage evolved

The latest polls indicate 58 percent of Americans support same-sex marriage. In 1977, that number was 13 percent. One researcher says that jump in support isn't the result of a generational gap — it's that many who once opposed gay marriage have changed their minds or softened their opposition.

Recent polls show 70 percent of those aged 18 to 32 favor same-sex marriage. But the topic isn't settled, and for many young people, especially young Republicans, the issue of gay marriage is still a stumbling block.

Sub-freezing temperatures and a snow forecast aren't stopping die-hards from camping outside the Supreme Court for a seat to history. The court will begin hearing oral arguments Tuesday in its review of same-sex marriage laws.

Host Rachel Martin talks with Jim Daly, president and chief executive officer of Focus on the Family, about the shifting religious and political landscape on gay rights and same-sex marriage.

Ken Mehlman, the political director for the George W. Bush White House, compares the right to marry to other fundamental rights conservatives embrace. He rounded up a group of 131 prominent Republicans to sign a legal brief that's at odds with the House GOP leadership and the party's platform.

As the Supreme Court considers the constitutional case for gay marriage, we look back at the role Vermont played just 13 years ago in the historic metamorphosis of the issue. The state's governor, who wore a bulletproof vest that year, called it "the least civil public debate in the state in over a century."