Trump escalates attacks on Ted Cruz's eligibility to run

Donald Trump taunted fellow Republican presidential candidate Ted Cruz over his eligibility to be president on Saturday, offering the following response to Cruz's instance that he's a natural born citizen: "You're not."

"You can't have a person running for office, even though Ted is very glib and he goes out and he says, 'Oh, well, I'm a natural born citizen.' The point is, you're not," Trump said during a rally in Clear Lake, Iowa.

"I mean, you've got to get a declaratory judgement, you have to have the courts come...