As GOP state party chair, he’s now endorsed the candidate who OVERWHELMINGLY won his state’s primary where actual people, registered Republicans, voted. What would you have had him do? Had Cruz or Kasich won, he’d have endorsed the winner. Just as happened in many other states, the political powers within the state endorse after their people have voted and made known their preference.
Tell me, did you lecture Trumpbots about that when they screamed "UNIPARTY!!!" and "GOPE!!!" at Ted Cruz for accepting the endorsements of an "establishment Republican" in a state that he had overwhelmingly won?