The U.S. Supreme Court will hear arguments today in the first of two historic cases that could determine the future of same-sex marriage. Today the court will take up California’s same-sex marriage ban, Proposition 8, and consider whether same-sex couples have a constitutional right to get married. On Wednesday, the Supreme Court will hear a second case that challenges the Defense of Marriage Act, signed by President Bill Clinton in 1996, which denies federal benefits to married same-sex couples.