The union’s Georgia president, whose name appears at the bottom of the letter, claims it was sent without his permission: ‘I had no idea they were sending out a letter with my name.’If former President Donald Trump wins November’s election, he would pose an “existential threat” — at least according to a letter apparently from the National Association of Letter Carriers (NALC), obtained by The Federalist.“If Donald Trump wins the upcoming election, it could prove an existential threat to our union and our contract,” the letter reads. “Your vote matters: consider how the consequences could affect you, your job, and...