Mullin emphasizes a steady leadership for the Department of Homeland Security.
The hearing was marked by tension over immigration policies.
Mullin is nominated by President Trump.
Strategic angle: Markwayne Mullin assures senators of his commitment to a hard-line immigration agenda.
Mullin emphasizes a steady leadership for the Department of Homeland Security.
The hearing was marked by tension over immigration policies.
Mullin is nominated by President Trump.