Sen. Claire McCaskill, D-Mo., speaks on Capitol Hill in Washington, Jan. 5, 2017, during the Senate Armed Services Committee's hearing "Foreign Cyber Threats to the United States."
Sen. Claire McCaskill, D-Mo., speaks on Capitol Hill in Washington, Jan. 5, 2017, during the Senate Armed Services Committee's hearing "Foreign Cyber Threats to the United States." Evan Vucci AP
Sen. Claire McCaskill, D-Mo., speaks on Capitol Hill in Washington, Jan. 5, 2017, during the Senate Armed Services Committee's hearing "Foreign Cyber Threats to the United States." Evan Vucci AP