NORTH CHARLESTON, S.C. (AP) - With two weeks to go until Iowans head to the polls in the first vote of the 2016 primary season, Republican front-runner Donald Trump ramped up his attacks against rival Ted Cruz on Friday, while Jeb Bush scored a key endorsement for his White House bid. South Carolina Sen. Lindsey Graham announced he is backing Jeb Bush for the Republican presidential nomination, praising the former Florida governor's approach to national security. "I have concluded without any hesitation, any doubt, that Jeb Bush is worthy to be commander-in-chief on day one," Graham said Friday at a...
