US Republican Presidential nominee Donald Trump addresses supporters at Macomb Community College on October 31, 2016 in Warren, Michigan. Donald Trump and Hillary Clinton traded fierce campaign trail attacks Monday, as the Republican underdog barnstormed Democratic territory in the race's final week and warned of a "constitutional crisis" should his rival win the White House. / AFP / JEFF KOWALSKY (Photo credit should read JEFF KOWALSKY/AFP/Getty Images)
