8 U.S.C. 1182(f) allows the president, by proclamation, to limit entry into the United States of any class of aliens.
Well, it’s a start. In my view, Trump has forced the whole planet to confront the scourge of Islam, so this thing is only getting started.
Who knows how far it’ll all go? By November 2016, we could be ‘voting from the rooftops’.