President Trump refused to back down from one of his major campaign promises at Camp David on Saturday, assuring a room full of reporters that Mexico will pay for a southern border wall.

“I believe that Mexico will pay for the wall,” the president said, capping the first week in 2018. “I have a very good relationship with Mexico. We’re negotiating NAFTA, see how that goes, yes, but Mexico will pay, in some form, Mexico will pay for the wall.”