“Stephen Miller, a senior policy adviser to the President, convened a weekly meeting to devise creative methods of restricting immigration. “Stephen knew how to control immigration policy by getting his people into key positions and using whatever levers of executive authority he could,” one of his White House colleagues told me. Some of the changes that came out of Miller’s meetings were pushed through as formal rules, which must be published in the Federal Register, and opened to public comment. But others were crafted through less visible administrative actions.” Sarah Stillman in The New Yorker: Trump transformed immigration through hundreds of quiet measures. Before they can be reversed, they have to be uncovered.