JD Vance, Donald Trump’s newly picked vice presidential running mate, took to the stage at the Republican National Convention on Wednesday, showering Trump with praise over his handling of the failed assassination attempt against him. “He can stand defiant against an assassin one moment and call for national healing the next. He is a beloved father and grandfather,” Vance told the crowd in what was his first speech after being officially nominated the Republican’s vice presidential candidate. “They said he was a tyrant. They said he must be stopped at all costs. But how did he respond? He call…