U.S. Department of Homeland Security

WATCH: Senate votes to confirm Markwayne Mullin as DHS secretary

By Rebecca Santana, Associated Press

The Senate is on track to confirm Markwayne Mullin as homeland security secretary, President Donald Trump's nominee to take over the embattled department after firing Kristi Noem amid a public backlash over the administration's immigration enforcement and mass deportation operations.

Federal immigration agents deployed to Atlanta airport during partial shutdown

By Emilie Megnien, Wyatte Grantham-Philips, Associated Press

Hundreds of thousands of Homeland Security workers, including from the TSA, U.S. Secret Service and Coast Guard, have worked without pay since Congress failed to renew DHS funding last month.

WATCH: Senate fails to advance measure for DHS funding to end shutdown

By Kevin Freking, Associated Press

A bill to fund the Department of Homeland Security failed to advance Friday in the Senate amid growing concerns about long lines to get through screening at some of the country's biggest airports.

WATCH: Senate Homeland Security panel advances Markwayne Mullin's nomination for DHS

By Meg Kinnard, Associated Press

Sen. Markwayne Mullin moved a step closer to becoming President Donald Trump's next homeland security secretary after a Senate committee Thursday narrowly advanced his nomination.

WATCH: Sen. Paul asks DHS nominee Mullin if he believes violence can resolve political differences

By Joshua Barajas

“I don't always agree with that. I don't believe in political violence. I've made that very clear,” Sen. Markwayne Mullin, R-Okla., said in his confirmation hearing before the Senate Homeland Security and Governmental Affairs Committee.

WATCH: Sen. Markwayne Mullin testifies in confirmation hearing for DHS secretary

By Rebecca Santana, Associated Press

Mullin, the White House pick for homeland security secretary, made a case to fellow senators Wednesday that he would be a steady hand for a department roiled by controversy under Kristi Noem, but signaled he would follow President Donald Trump's…

Who is Markwayne Mullin, Trump's new pick for DHS?

By Sean Murphy, Associated Press

The 48-year-old Republican has become one of Trump's fiercest defenders in the U.S. Senate.

Trump replacing Noem as Homeland Security secretary

By Michelle L. Price, Associated Press

Trump, who said he would nominate Oklahoma Republican Sen. Markwayne Mullin in her place, made the announcement on social media after Noem faced a two-day grilling on Capitol Hill this week from GOP members as well as Democrats.

WATCH: Senate fails to pass DHS funding bill with U.S.-Israel war on Iran escalating

By Kevin Freking, Associated Press

Republicans invoked the war in Iran and the prospect of retaliatory terrorist attacks as they made another unsuccessful effort Thursday to pass a bill funding the Department of Homeland Security.