Texas Sen. Ted Cruz's personality could be a hinderance to his campaign, fellow GOP presidential contender Kentucky Sen. Rand Paul said on Sunday. During an interview on NBC's "Meet the Press," Paul criticized Cruz's handling of disagreements with leadership -- referencing the time Cruz called Sen. Mitch McConnell (R-Ky.) a liar from the Senate floor. Paul said that unlike Cruz, he is able to keep his arguments with leadership to a professional level. "I've given 10-hour speeches, 13-hour speeches without calling anybody names, but talking about the history of our country, the importance of the Bill of Rights, the importance...