Former President Donald Trump delivered a dark promise to Pennsylvania in Tuesday morning’s early hours as he doubled down on anti-immigrant rhetoric weeks after saying, wrongly, that Haitian immigrants eat pets. Trump took to Truth Social at 12:40 a.m. ET to tell the swing state’s voters he would put a stop to “reckless” migration into cities such as Philadelphia and Pittsburgh. “If [Vice President] Kamala Harris wins this election, she will flood Pennsylvania cities and towns with illegal migrants from all over the world—and Pennsylvania will not be Pennsylvania any longer,” Trump wrote. “We…