FILE - In this Dec. 1, 2011 file photo, Massachusetts Attorney General Martha Coakley speaks to reporters at a news conference in Boston. A battle over the federal law that defines marriage as a union between a man and a woman appears headed for the Supreme Court after an appeals court ruled Thursday, May 31, 2012, that denying benefits to married gay couples is unconstitutional. The ruling came in two lawsuits, one filed by the Boston-based legal group Gay & Lesbian Advocates & Defenders (GLAD) and the other by Coakley. (AP Photo/Josh Reynolds, File)