Nebraska Sen. Ben Sasse issued a statement asking President Trump is he is “recanting” the oath he took to defend and uphold the Constitution after Trump suggesting revoking the “licenses” of network news organizations.

“Mr. President: Words spoken by the President of the United States matter,” the Republican senator wrote in a statement. “Are you tonight recanting of the oath you took on Jan. 20 to preserve, protect, and defend the 1st Amendment?”

Sasse’s tweet came after Trump sparked backlash from both conservatives and liberals by saying he should censor certain news outlets.

“Network news has become so partisan, distorted and fake that licenses must be challenged and, if appropriate, revoked. Not fair to public!” Trump wrote.

Network news has become so partisan, distorted and fake that licenses must be challenged and, if appropriate, revoked. Not fair to public! — Donald J. Trump (@realDonaldTrump) October 12, 2017

“With all of the Fake News coming out of NBC and the Networks, at what point is it appropriate to challenge their License?” Trump asked in another tweet. “Bad for country!”

Trump is not expected to act on the threat to censor unfriendly news outlets.