Kevin Williamson of National Review Online explains why he believes congressional impeachment of President Trump would represent a “redundant judgment.”

The Mueller investigation was supposed to be a legal process concerned with crimes. Investigators identified no crimes to charge, and so it has, naturally, become something else: no longer a theory about a criminal conspiracy — only an irritable mood.

An ordeal that had been conducted under the procedures of law in accordance with legal criteria is now an ordeal that is being conducted under the procedures of politics in accordance with political criteria — or, if you prefer, with moral criteria related to Donald Trump’s character. For those who want to see President Trump impeached and who think of impeachment as a fundamentally political process in spite of its mock-trial aspect, that’s just fine. They’ll take their pound of flesh, however it is had.

The problem with this point of view is that the question of Donald Trump’s personal fitness for office already has been adjudicated as a political matter: That is what happened in the 2016 presidential election. Many critics, myself included, argued that Trump was unfit for the office, both morally and intellectually. We made our arguments, the voters consulted their own consciences, and, weighing these things however it is that voters weigh them, chose Trump. There wasn’t some occult intermediary step in there. That’s how things go in politics: The people behave just as if they had minds of their own! And, sometimes, they get to have their own way.