Mitt Romney disagrees with radio talk show host Rush Limbaugh’s claim that Romney made a grave error in endorsing Sen. John McCain over more conservative former Rep. J.D. Hayworth in the Arizona Republican primary. “I find it hard to disagree with Rush Limbaugh on topics, but on this one I do,” Romney tells Newsmax.TV. “I know Senator McCain. I think his experience in the military, in the Senate, and the wisdom and judgment he has developed over a lifetime is something we need in the Senate. “I think it serves our country well. I also believe that it’s essential that...