A strange quiet has settled in at the White House.
President Trump greeted Robert Mueller’s appointment as special counsel in charge of the Russia investigation with a steady stream of diatribes, including some 40 bilious tweets. He challenged Mueller’s impartiality and called the investigation a “witch hunt.” But for nearly two months, Trump has restrained himself on the subject. His lawyers, meanwhile, have treated Mueller with customary deference.
The lawyers have accomplished what 16 Republican candidates, beauty pageant contestants, military heroes and a federal judge could not: They have muzzled Donald Trump.
How long can it last?
The president’s newfound...