National Security

Mark Sandy, from the Office of Management and Budget, arrives to the U.S. Capitol earlier this month for a deposition regarding whether President Trump ordered a hold on military assistance to Ukraine. Sarah Silbiger/Getty Images hide caption

Navy SEAL Special Operations Chief Edward Gallagher during a recess in his trial this summer in San Diego, Calif. Sandy Huffaker/Getty Images hide caption

President Trump said in an interview this week that he intends to designate Mexican drug cartels as foreign terrorist organizations despite resistance from Mexican officials. Susan Walsh/AP hide caption

Mark Sandy, a senior career official at the Office of Management and Budget, outside the Capitol before his close-door deposition earlier this month. Sarah Silbiger/Getty Images hide caption

Philip Reeker, acting assistant secretary of state for Europe, arrives Oct. 26 for a closed-door interview at the Capitol in Washington, D.C. Jose Luis Magana/AP hide caption

Secretary of State Mike Pompeo says "many countries" are working to undermine American democracy. He adds: "To protect our elections, America should leave no stone unturned." Alex Brandon/AP hide caption

President Trump spoke before pardoning the National Thanksgiving Turkey during a ceremony in the Rose Garden on Tuesday. Trump has until 6 p.m. on Dec. 1 to notify the House Judiciary Committee of any plans to participate in the upcoming public hearing on impeachment. Saul Loeb/AFP via Getty Images hide caption

President Trump, Vice President Pence and first lady Melania Trump present Conan, the military working dog injured in the successful operation targeting Islamic State leader Abu Bakr al-Baghdadi, before the media in the Rose Garden at the White House on Monday. Evan Vucci/AP hide caption

Secretary of the Navy Richard Spencer has been pushed out over his handling of the case of a Navy SEAL accused of war crimes. Spencer is seen here testifying during a Senate Armed Services Committee hearing in April. Alex Edelman/Getty Images hide caption

Former CIA officer Jerry Chun Shing Lee was sentenced to 19 years in prison for conspiracy to spy for China. AP hide caption

Fiona Hill, the National Security Council's former senior director for Europe and Russia, and David Holmes, an official from the U.S. Embassy in Ukraine, testified in the House impeachment inquiry Thursday. Matt McClain/Pool/Getty Images hide caption

Special Operations Chief Edward Gallagher and his wife, Andrea Gallagher, after the Navy SEAL was acquitted of murder by a military court in San Diego on July 2. Gregory Bull/AP hide caption

Fiona Hill (left), the National Security Council's former senior director for Europe and Russia, and David Holmes, an official from the American Embassy in Ukraine, are sworn in to testify before the House Intelligence Committee in the Longworth House Office Building on Capitol Hill on Thursday. Chip Somodevilla/Getty Images hide caption

Former White House national security aide Fiona Hill and David Holmes, a U.S. diplomat in Ukraine, return from a break to continue their testimony before the House Intelligence Committee on Thursday. Andrew Harnik/AP hide caption