Chairman Sen. Richard Burr, R-N.C., prepares before the Senate Intelligence Committee's hearing on worldwide threats on Capitol Hill in Washington on Feb. 9, 2016.
Chairman Sen. Richard Burr, R-N.C., prepares before the Senate Intelligence Committee's hearing on worldwide threats on Capitol Hill in Washington on Feb. 9, 2016. Alex Brandon AP
Chairman Sen. Richard Burr, R-N.C., prepares before the Senate Intelligence Committee's hearing on worldwide threats on Capitol Hill in Washington on Feb. 9, 2016. Alex Brandon AP