Sen. Tom Cotton (R-Ark.) said in a new interview the job of advisers in the Trump administration is to advise the president and carry out his decisions.

And if officials disagree with President Trump’s thinking, Cotton said, they should resign.

“When you’re a cabinet member, when you’re a senior advisor in the White House, and the president is right, you should help him achieve his objectives and run with his thinking,” Cotton told Politico.

“When you think the president is wrong, you have a duty to try to present to him the best facts and the best thinking to help him see it in a different light,” he continued.