President Barack Obama doubled down on his support for stronger gun control laws Sunday, reiterating his call for national "soul searching" in the wake of the Newtown elementary school massacre. "Something fundamental in America has to change. And all of us have to do some soul searching, including me as president, that we allow a situation in which 20 precious small children are getting gunned down in a classroom," Obama said in a taped interview with Meet The Press host David Gregory.