Republicans to Trump: Let Mueller do his job

By Susan Cornwell and Doina ChiacuWASHINGTON (Reuters) - Republican senators warned President Donald Trump on Sunday not to fire Special Counsel Robert Mueller, and said the president must let federal investigators looking into Russian meddling in the U.S. election do their jobs.The Republican president has renewed his Twitter attacks on both the Federal Bureau of Investigation and Mueller's probe since the firing on Friday of the bureau's former deputy director, Andrew McCabe, two days before h