Deputy Attorney General Rod J. Rosenstein speaks at the Los Angeles Crime Fighters Leadership Conference in Los Angeles, California, U.S., February 7, 2019.

U.S. Secret Service Director Randolph Alles participates in a news conference about "significant law enforcement actions related to elder fraud" in Washington, U.S. March 7, 2019.

White House Communications Director Bill Shine awaits the arrival of U.S. President Donald Trump to speak about efforts to end the partial government shutdown in the Rose Garden at the White House in Washington, U.S., January 25, 2019.

Trump economic adviser Kevin Hassett gestures as he speaks during a news briefing at the White House in Washington, U.S., September 10, 2018.

Acting U.S. Defense Secretary Patrick Shanahan looks on during the IISS Shangri-la Dialogue in Singapore, June 1, 2019.

U.S. National Security Advisor, John Bolton, gestures as he meets with journalists during a visit to London, Britain August 12, 2019.

U.S. President Donald Trump talks to reporters as Department of Homeland Security Secretary Kirstjen Nielsen (R) looks on at a signing ceremony for the Cybersecurity and Infrastructure Security Agency Act in the Oval Office of the White House in Washington, U.S. November 16, 2018.

U.S. Food and Drug Commissioner Scott Gottlieb attends an interview at Reuters headquarters in New York City, U.S., October 10, 2017.

U.S. President Donald Trump and U.S. Ambassador to the United Nations Nikki Haley confer during a meeting of the United Nations Security Council held during the 73rd session of the United Nations General Assembly at U.N. headquarters in New York, U.S., September 26, 2018.

White House senior adviser Kellyanne Conway holds a press briefing at the White House in Washington, U.S., January 30, 2020.

White House Chief of Staff John Kelly waits behind the Resolute Desk as U.S. President Donald Trump delivers remarks to reporters as he welcomes United Nations Secretary General Antonio Guterres for a meeting in the Oval Office at the White House in Washington, U.S. October 20, 2017.

U.S. President Donald Trump and Attorney General Jeff Sessions button their coats as they stand for the national anthem at a graduation ceremony at the FBI Academy on the grounds of Marine Corps Base Quantico in Quantico, Virginia, U.S. December 15, 2017.

Acting Department of Homeland Security (DHS) Secretary Kevin McAleenan reacts while protesters interrupt his remarks at the Migration Policy Institute annual Immigration Law and Policy Conference in Washington, U.S., October 7, 2019.

U.S. Defense Secretary James Mattis listens as U.S. President Donald Trump speaks to the news media while gathering for a briefing from his senior military leaders in the Cabinet Room at the White House in Washington, U.S., October 23, 2018.

Administrator of the Small Business Administration Linda McMahon speaks at the Conservative Political Action Conference (CPAC) at National Harbour, Maryland, U.S., February 23, 2018.

Director of National Intelligence Dan Coats testifies to the Senate Intelligence Committee hearing about "worldwide threats" on Capitol Hill in Washington, U.S., January 29, 2019.

U.S. President Donald Trump holds an Oval Office meeting on hurricane preparations as FEMA Administrator Brock Long points to the potential track of Hurricane Florence on a graphic at the White House in Washington, U.S., September 11, 2018.

Secretary of the Air Force Heather Wilson speaks at a Senate Armed Services hearing on the proposal to establish a U.S. Space Force, in Washington, U.S., April 11, 2019.

U.S. President Donald Trump kisses White House Press Secretary Sarah Sanders after it was announced she will leave her job at the end of the month during a second chance hiring prisoner reentry event in the East Room of the White House in Washington, U.S., June 13, 2019.

U.S. President Donald Trump announces the resignation of Labor Secretary Alex Acosta (R) before departing for travel to Milwaukee, Wisconsin from the South Lawn of the White House in Washington, U.S., July 12, 2019.

June 25, 2019: John Sanders, acting commissioner of the Customs and Border Protection agency. Donna Burton/CBP/Handout via REUTERS

White House Deputy National Security Advisor Mira Ricardel (R) appears with U.S. President Donald Trump at a Diwali ceremony as the office of first lady Melania Trump announced a request from the first lady that Ricardel be fired at the White House in Washington, U.S. November 13, 2018.

U.S. Interior Secretary Ryan Zinke testifies before a Senate Appropriations Interior, Environment and Related Agencies Subcommittee hearing on the FY2019 funding request and budget justification for the Interior Department, on Capitol Hill in Washington, U.S., May 10, 2018.

U.S. Secretary of Energy Rick Perry testifies to the House Energy and Commerce Committee on the "Fiscal Year 2019 Department of Energy Budget" on Capitol Hill in Washington, U.S., April 12, 2018.

Former U.S. Representative Henry Bonilla (R) is escorted by Republican National Committee staff member Madeleine Westerhout as he arrives to meet with U.S. President-elect Donald Trump at the Mar-a-lago Club in Palm Beach, Florida, U.S. December 30, 2016.