WASHINGTON—Sen. Marco Rubio (R-Fla.) will serve as acting chairman of the Senate Select Committee on Intelligence, Senate Majority Leader Mitch McConnell (R-Ky.) said on Monday, after Sen. Richard Burr (R-N.C.) announced he would step aside from the position during a federal investigation of his stock trades.
Rubio, 48, has been an active Republican voice on national security and foreign policy matters throughout the nine years he has been in the Senate.