Senate Majority Whip John Cornyn on Thursday derided proposals to restrict gun sales to people suspected of terrorist activity as “un-American,” since Hillary Clinton and Democratic lawmakers seem to be opposing having a judge oversee the cases.

“Observing constitutional rights for American citizens is not a smokescreen,” Cornyn told reporters Thursday afternoon. “That’s an incredibly ignorant thing for her to say, that anybody can be denied their constitutional rights without due process of law, without the government coming forward and establishing due process of law. That’s simply un-American.”