President Trump fired his embattled Veterans Affairs secretary Wednesday and tapped as his replacement atop the chronically mismanaged agency the president’s personal physician, who gained prominence with his effusive praise of the 71-year-old’s physical and mental health. The ouster of Veterans Affairs Secretary David Shulkin, who has been mired in scandal over his charging taxpayers for luxury travel expenses and the infighting among his senior aides, had been widely expected and was made official at 5:31 p.m.