JD Vance is only the latest in a parade of personnel misfires launched by Donald Trump. The junior senator from Ohio turned unpopular vice-presidential pick follows other bad staffing ideas like Omarosa Manigault Newman, Anthony Scaramucci and Rob Porter. In Trump in Exile, her new book on the former president’s time out of power, Meridith McGraw of Politico reminds us of Trump’s limited vetting skills, as well as his antipathy toward Florida’s Ron DeSantis, and his cravings for cash. Oh – and his fetish for being tanned. “Trump was still getting bronzed and ready for the day when a group...