Elizabeth Chase, left and Kate Baldridge, of Fresno, California, an engaged same-sex couple hoping to marry, listen to a rally outside of the federal courthouse in San Francisco, Monday, Jan. 11, 2010. The first federal trial to determine if the U.S. Constitution prohibits states from outlawing same-sex marriage got under way Monday, and the two gay couples on whose behalf the case was brought will be among the first witnesses. (AP Photo/Marcio Jose Sanchez)
