FILE - In this April 20, 2012, file photo Education Secretary Arne Duncan speaks durng the daily news briefing at the White House in Washington. President Barack Obama's vague stance on gay marriage is facing fresh scrutiny. Duncan has broken ranks with the White House, stating his unequivocal support for same-sex marriage. Duncan's comments on Monday, May 7, 2012, came one day after Vice President Joe Biden suggested he supported gay marriage, too. (AP Photo/Carolyn Kaster, File) Photo: Carolyn Kaster, Associated Press