It’s not often that a Republican presidential primary in New York matters. This year it does. It’s a time for choosing, to paraphrase Ronald Reagan. The choice is between Donald Trump and Ted Cruz, though John Kasich is on the ballot too. The real race to the nomination has been Trump v. Cruz for at least several weeks and it is likely to remain that way. Faced with that choice, it’s easy. Legal Insurrection started in October 2008 in anticipation of the Obama presidency. We were part of the Tea Party movement (though aligned with no specific group) since the...