Back in 1991, a judge found that Trump has conspired with business associates to hire illegal workers and cheat them of their pay: In a ruling released on Thursday, a Federal judge found that Mr. Trump, a group of his associates and a union official conspired to avoid paying pension and welfare-fund contributions by hiring the immigrants to demolish the old Bonwit Teller building on East 57th Street at Fifth Avenue to make way for Trump Tower. Back in 2013, Trump was a big believer in amnesty and in the DREAM program: “You know, the truth is I have a...