FILE - In this Oct. 14, 2008 file photo, former Presidents Bill Clinton and George Bush walk on the beach in Galveston, Texas. Again? Really? There are more than 300 million people in America, yet the same two families keep popping up when it comes to picking a president. The possibility of a Bush-Clinton matchup in 2016 is increasingly plausible. After months of hints and speculation, former Florida Gov. Jeb Bush last week said he's actively exploring a bid for the Republican nomination. And while Hillary Rodham Clinton hasn't revealed her intentions, she's seen as the odds-on favorite for the Democratic nomination. (AP Photo/Pat Sullivan, File)