Newly elected House GOP Conference Chairwoman Liz Cheney, R-Wyo., has been a vocal critic of Rep. Steve King, R-Iowa. Susan Walsh/AP hide caption

Commerce Secretary Wilbur Ross, who oversees the Census Bureau, approved adding a question about U.S. citizenship status to the 2020 census. Andrew Harrer/Bloomberg via Getty Images hide caption

Rep. Steve King, R-Iowa, a member of the House Judiciary Committee, is under fire again for making controversial remarks. J. Scott Applewhite/AP hide caption

Unauthorized immigrants leave a court in shackles in McAllen, Texas. More than 40,000 immigration court hearings have been canceled since the government shut down. John Moore/Getty Images hide caption

President Trump talks to the press about the table full of fast food laid out in the State Dining Room of the White House for a reception for the Clemson Tigers. Susan Walsh/AP hide caption

Attorney general nominee William Barr met with senators including Chuck Grassley, R-Iowa, last week. Barr has vowed to preserve special counsel Robert Mueller's investigation. J. Scott Applewhite/AP hide caption

President Trump called the idea he might have worked on behalf of Russia a "hoax" at the White House on Monday. "A whole big fat hoax." News reports raised new questions over the weekend. Evan Vucci/AP hide caption

President Trump addresses the annual American Farm Bureau Federation convention in New Orleans on Monday. Mandel Ngan/AFP/Getty Images hide caption

Then-Attorney General William Barr, left, with President George H.W. Bush. Barr supported Bush's pardons for six people caught up in the Iran-Contra scandal, which is resonating today. Marcy Nighswander/AP hide caption

Federal workers wait for food distribution to begin on Saturday at a pop-up food bank in Rockville, Md. The Capital Area Food Bank is distributing free food to government employees during the government shutdown. Ian Stewart/NPR hide caption

President Trump speaks with Russian President Vladimir Putin at the G20 Summit in Hamburg in July 2017. Evan Vucci/AP hide caption

Demonstrators outside the U.S. Supreme Court in Washington, D.C., in 2014 react to hearing the court's decision on the Hobby Lobby birth control case. Pablo Martinez Monsivais/AP hide caption

Democrat Julián Castro talks about exploring the possibility of running for president in 2020, at his home in San Antonio in December 2018. Eric Gay/AP hide caption

Union members and other federal employees protest in front of the White House on Thursday. Many are out of work as the partial government shutdown has dragged on longer than any in history. Pablo Martinez Monsivais/AP hide caption

Then-House Speaker Newt Gingrich gestures toward President Bill Clinton, as then-Senate GOP leader Bob Dole sits to the right. They met to try to work through the government shutdown in late 1995 to early 1996. Greg Gibson/AP hide caption

IRS employee Pam Crosbie and others hold signs protesting the government shutdown at a federal building in Ogden, Utah. Natalie Behring/Getty Images hide caption

Supreme Court Justice Ruth Bader Ginsburg during a talk with Georgetown University law students in Washington. AFP Contributor/AFP/Getty Images hide caption

A section of the reinforced U.S.-Mexico border fence as seen from Tijuana, Mexico, on Sunday. Guillermo Arias/AFP/Getty Images hide caption

President Trump holds a picture labeled "typical standard wall design" as he hosts a roundtable discussion on border security in the Cabinet Room of the White House on Friday. Alex Wong/Getty Images hide caption

North Carolina 9th district Republican congressional candidate Mark Harris, with his wife Beth, claims victory in his congressional race in Monroe, N.C. The race, however, has yet to be certified as authorities look into fraud claims in the eastern part of the district. Nell Redmond/AP hide caption

President Trump says if he doesn't get a border wall, he will declare a national emergency to build it. Jacquelyn Martin/AP hide caption