Sen. Markwayne Mullin (R-OK) will spend the next several months attempting to prove that he can send the Department of Homeland Security in a new direction after President Donald Trump fired Kristi Noem after a year atop the embattled agency.

Trump’s decision to nominate Mullin on Thursday checks several boxes for Republicans weary of the drama surrounding Noem, who drew calls for her resignation and an impeachment push by congressional Democrats over her handling of immigration enforcement in Minnesota.