Will the presidency’s expansion be permanent?

By David Shribman

Last month, the Supreme Court permitted Donald Trump to remove members of regulatory agencies and to curtail efforts of migrants to win asylum in the United States. In the last several days, the president has lectured NATO partners and described citizens of a longtime American ally as “hopeless, bad people.”

This isn’t a column about Trump’s excesses, bad manners or intemperate language. It’s a column about the office he holds. It’s expanding again. The president who ...