Here's an interesting exchange between NBC News and former Republican presidential candidate Ted Cruz that happened just now: NBC: Donald Trump's remarks about Judge Curiel, are his concerns legitimate? Cruz: Of course it's inappropriate to be attacking a federal judge's race or ethnicity. You're going to have ask Donald to explain the reason he says the things he does. I'm not going to try to do so. NBC: Ben Sasse said that what Donald Trump said about the judge is pure definition of racism. Is Donald Trump a racist? Cruz: As I said, it is obviously inappropriate to attack a...