WASHINGTON (AP) — William Barr was sworn in Thursday for his second stint as the nation's attorney general, taking the helm of the Justice Department as special counsel Robert Mueller investigates Russian interference in the 2016 presidential election.

Earlier Thursday, the Senate voted 54-45 to confirm the veteran government official, mostly along party lines. Barr, who also served as attorney general from 1991 to 1993 during President George H.W. Bush's administration, succeeds Jeff Sessions. President Donald Trump pushed Sessions out of office last year after railing against his decision to...