The Senate on Thursday approved President Donald Trump's attorney general nominee William Barr by a vote of 54 to 45. Barr previously served as the nation's chief law enforcement officer from 1991 to 1993 and will oversee remaining work in Special Counsel Robert Mueller's Russia investigation. Barr replaces acting Attorney General Matt Whitaker. Three Democrats joined most Republicans in voting for Barr, while GOP Sen. Rand Paul voted against him.