Oklahoma Republican Sen. Markwayne Mullin says he has no idea how quickly his nomination to replace Kristi Noem at the Department of Homeland Security will move

Kristi Noem delivers remarks in Nashville, Tennessee after reports surfaced that President Donald Trump had fired her as DHS secretary.

President Trump announced Thursday that he's removing Kristi Noem from her position as Homeland Security secretary. CBS News chief White House correspondent Nancy Cordes has more.

US President Donald Trump has fired Kristi Noem, his homeland security secretary, and nominated Oklahoma Republican Senator Markwayne Mullin as her replacement. Trump announced the move on Thursday afternoon in a post to his Truth Social platform.

President Donald Trump fired Kristi Noem as his Homeland Security secretary Thursday amid growing criticism of her leadership, making her the first Cabinet secretary to leave during his second term.

Lawmakers are starting to react after President Trump announced Thursday that he was removing Kristi Noem as secretary of the Homeland Security Department. CBS News political reporter Hunter Woodall has more.

Trump fired Kristi Noem as secretary of the Department of Homeland Security after lawmakers grilled her over an ad campaign that featured her.

Oklahoma Republican Sen. Markwayne Mullin says he has no idea how quickly his nomination to replace Kristi Noem at the Department of Homeland Security will move.