President Trump delivers the State of the Union address in the chamber of the U.S. House of Representatives on Jan. 30, 2018, in Washington, D.C. Win McNamee/Getty Images hide caption

Speaker Nancy Pelosi, D-Calif., has postponed plans to travel to Afghanistan, charging that the White House leaked plans. Bloomberg via Getty Images hide caption

North Korean leader Kim Jong Un and President Trump shake hands prior to their meeting in Singapore in June 2018. Evan Vucci/AP hide caption

The IRS has recalled tens of thousands of furloughed workers to process tax refunds despite the government shutdown. Bloomberg via Getty Images hide caption

Rep. Debbie Mucarsel-Powell, D-Fla. (from left); Rep. Lauren Underwood, D-Ill.; Rep. Katie Hill, D-Calif.; Rep. Mike Levin, D-Calif., and other freshman members of the House of Representatives speak about the government shutdown in front of the U.S. Senate on Tuesday. Alex Brandon/AP hide caption

California Gov. Gavin Newsom, right, hugs TSA employee Miguel Pagarigan at the Sacramento International Airport Thursday. "Because of the shutdown and being furloughed ... I had to put a 'For Sale' sign on my house on Sunday," Pagarigan said. Rich Pedroncelli/AP hide caption

Vice President Pence looks on as now-House Speaker Nancy Pelosi, D-Calif., argues with President Trump during a meeting in the Oval Office last month. Evan Vucci/AP hide caption

Demonstrators affiliated with the National Air Traffic Controllers Association protested the federal shutdown at a Capitol Hill rally earlier this month in Washington, D.C. Alex Wroblewski/Bloomberg/Getty Images hide caption

Secretary of State Mike Pompeo during a visit to Muscat, Oman, on Monday. Andrew Caballero-Reynolds/AP hide caption

President Trump's approval rating is slipping, and it's largely because of cracks among his base. Brendan Smialowski/AFP/Getty Images hide caption

Donald Trump's former longtime lawyer, Michael Cohen, acknowledged his involvement in a scheme to inflate online poll results for Trump in order to make it appear he had more political support. Richard Drew/AP hide caption

A federal judge has struck down voting restrictions passed and signed during the Wisconsin Legislature's lame-duck session. Andy Manis/Getty Images hide caption

Teen migrants wait in line inside the Tornillo detention camp in Tornillo, Texas, in December 2018. Andres Leighton/AP hide caption

Ginny Suss, Carmen Perez, Gloria Steinem, Linda Sarsour and Mia Ives-Rublee appear at the first Women's March in Washington, D.C., the day after President Trump's 2017 inauguration. Two years later, divisions in the movement have dampened the 2019 events. Theo Wargo/Getty Images hide caption

Giant panda Bao Bao was at the Smithsonian National Zoo until February 2017. Alex Wong/Getty Images hide caption

Rep. Adam Schiff told NPR he intends to use his power to convene hearings, call witnesses and get information. Amr Alfiky/NPR hide caption

Federal immigration authorities took Jilmar Ramos-Gomez, a U.S. citizen and veteran, into custody to face possible deportation. Courtesy ACLU of Michigan hide caption

William Barr, President Trump's nominee to be attorney general, testifies during a Senate Judiciary Committee confirmation hearing on Capitol Hill Tuesday. Saul Loeb/AFP/Getty Images hide caption

The Old Post Office Pavilion Clock Tower, seen above the Trump International Hotel in Washington, remains open despite the partial government shutdown. Alex Brandon/AP hide caption