President Trump announced the ousting of Kristi Noem as Homeland Security Secretary on Thursday.
This announcement marks the beginning of a formal nomination and confirmation process for his selected replacement, Oklahoma Senator Markwayne Mullin.
CBS News homeland security correspondent Nicole Sganga has more on the story.
https://www.cbsnews.com/video/kristi-noem-ousting-comes-amid-iran-war-partial-dhs-shutdown/