When Republican presidential posturing turns into definitive action, the critics come out like clockwork. It happened last week when Donald Trump announced he had formed a presidential exploratory committee and was immediately met with accusations he was disingenuous, unqualified or seeking publicity. Something similar is now underway against Sen. Ted Cruz, who will step before a Liberty University student convocation at precisely 10 a.m. on Monday and reveal he’s running for the White House in 2016. The Texas Republican is skipping the exploratory phase. Caustic headlines have arrived before he even gets to the microphone, these from the last 48...