It's hard to see this as anything but pure spite towards Cruz, of which there's plenty in Paulworld, for surpassing him as the "conservatarian" choice in the primary. In theory, I guess, raising enough doubt about Cruz's eligibility could cause some libertarians and "constitutionalists" to run away from Cruz and back to Paul, but how much is that worth to Paul? Five percent, maybe? He goes from an also-ran in the low single-digits to an also-ran in the high single-digits while potentially tipping the race to in Iowa to Trump, the least libertarian candidate in the race. And meanwhile Paul...