FILE - In this June 19, 2014, file photo, Gary Lyon, left, of Leechburg, Pa., and Bill Samford, of Hawley, Pa., celebrate after a vote allowing Presbyterian pastors discretion in marrying same-sex couples at the 221st General Assembly of the Presbyterian Church at Cobo Hall, in Detroit. The Presbyterian Church (U.S.A.) approved redefining marriage in the church constitution Tuesday, March 17, 2015, to include a "commitment between two people," becoming the largest Protestant group to formally recognize gay marriage as Christian and allow same-sex weddings in every congregation. (AP Photo/Detroit News, David Guralnick, File)