The department that the South Dakota governor seeks to lead will be critical to fulfilling the incoming administration’s promises to quickly crack down on immigration.

President-elect Donald Trump's choice for Homeland Security secretary portrayed illegal immigration as an "invasion" and the U.S.-Mexico border as a "war zone" during a U.S. Senate confirmation on Friday where she pledged to back Trump's hard line on immigration.

If confirmed, Noem would lead the department poised to be at the center of Trump's immigration policy priorities, including any deportation efforts, visa changes and border security.