FILE -In this Aug. 14, 1990 file photo, President George H. W. Bush addresses a White House press conference, in Washington, where he said he sees no short-term hope for a diplomatic solution to the Persian Gulf situation. President Barack Obama's summer fashion choice, not unprecedented among presidents - himself included - was the talk of social media, Thurs., Aug. 28, 2014. Other presidents who have taken on tan include Bill Clinton, Ronald Reagan, George H. W. Bush, George W. Bush and Dwight Eisenhower. (AP Photo/Dennis Cook, file)