U.S. Sen. Cory Gardner (R-CO) hadn’t commented on Trump’s insulting remark Friday that America should accept immigrants from places like Norway, as opposed to “shithole” countries, like those in the entire continent of Africa.

Gardner broke his silence Sunday, saying this to CBS “Face the Nation” host John Dickerson, who asked him about the dispute about Trump’s comment.

GARDNER: Well, look, I’m not going to get into the who-said-what-said, but what was reported is unacceptable. But what we have to do is not let that define this moment. Look, we have a very, very serious challenge in front of us. It’s a challenge that the president laid out very clearly this past week.

Watch all of the Face the Nation interview with Gardner here.