In this May 17, 2017, file photo, President Donald Trump and Homeland Security Secretary John Kelly listen to the national anthem during commencement exercises at the U.S. Coast Guard Academy in New London, Conn. Six months into presidency, Trump is saddled with a stalled agenda, a West Wing that resembles a viper’s nest, a cloud of investigations and a Republican Party that is starting to break away. Against that daunting backdrop, Trump moved July 28 to overhaul his senior team, installing Kelly as White House chief of staff. The hard-nosed, retired general replaces Reince Priebus, a Republican operative who was skeptical of Trump’s electoral prospects last year.(AP Photo/Susan Walsh, File)