With comments on Natalie Portman's pregnancy and President Obama's origins, Mike Huckabee placed himself squarely in the political spotlight as speculation intensifies about his plans for a 2012 presidential candidacy. Could he be challenging Sarah Palin for the social conservative vote?Mike Huckabee going all "Black Swan" on Natalie Portman was the capper to what's been an interesting and attention-getting week for the possible 2012 presidential candidate.