Speechwriter David Frum says Conservative radio host Rush Limbaugh is hurting the Republican Party. Rush is new (talking) head of the GOP His controversial quips come faster than a locomotive and he leaps over spineless Republicans in a single sound bite. He's Rush Limbaugh - and he's kryptonite for the GOP, says conservative pundit David Frum. Frum, an influential former Bush speechwriter, charges in this week's Newsweek that the bombastic radio talk show host is trashing the Republican Party by allowing the Democrats to anoint him de facto party leader. "Limbaugh is kryptonite, weakening the GOP nationally," writes Frum, who...