Homeland Security Secretary Markwayne Mullin suggested on Tuesday that “politicized” courts are the reason why he didn’t directly commit to obeying court rulings concerning the Department of Homeland Security.

In his first congressional hearing as the new DHS chief, Mullin repeatedly said his department will “enforce the law” and is “never going to break the Constitution.” But when Sen. Chris Murphy (D-CT) pressed him on DHS abiding by court rulings, the secretary declined to provide a definitive answer.