The process surrounding Donald Trump’s nominees tends to resemble an efficient assembly line. The president taps a loyalist with dubious qualifications; obedient Senate Republicans do what the White House tells them to do; and the nominees are confirmed to powerful positions that many of them clearly shouldn’t have. Lately, however, the assembly line has broken down with surprising frequency. Take this week, for example. MSNBC reported: President Donald Trump’s pick to lead the Office of Special Counsel, Paul Ingrassia, withdrew his name from consideration on Tuesday after his confirmation looked destined to fail. In a social media post Tuesday night,...