Key Facts

• Kristi Noem is leaving her role as the Secretary of the Department of Homeland Security.
• President Trump plans to nominate Senator Markwayne Mullin as her replacement.
• Noem will become a Special Envoy for a new security initiative in the Western Hemisphere.
• There has been public backlash and declining support for Trump's immigration policies.
• Kristi Noem faced criticism from both political parties.
• Some advisers discussed changing the White House's approach to immigration.
• Noem was the first Cabinet secretary to leave during Trump's second term.
• Sen. John Fetterman and others called for her removal after a controversial incident.