President Donald Trump sent a second tweet Wednesday night about what he deemed the partisan nature of network news, threatening to challenge and revoke their licenses.

“Network news has become so partisan, distorted and fake that licenses must be challenged and, if appropriate, revoked. Not fair to public!” Trump tweeted on Wednesday night. The tweet came after Trump returned to Washington D.C. from Pennsylvania, where he was giving a speech on tax reform — and shortly before he was set to appear in an interview with Sean Hannity on Fox News.

But Trump wouldn’t be able to revoke any licenses from news networks. As the FCC notes on its website, the organization only provides licenses to individual stations; it does not license television or radio networks.

The tweet capped off a day of attacks lodged at the media. Wednesday morning, after NBC News reported that Trump had alarmed members of his administration by requesting a tenfold increase in the U.S. nuclear arsenal — which he categorically denied as “pure fiction” and “fake news” — he had tweeted that it may be “appropriate” to challenge network news licenses.

Later on Wednesday, Trump told reporters when asked about the NBC report, “it is frankly disgusting the way the press is able to write whatever they want to write and people should look into it.”

Get our Politics Newsletter. The headlines out of Washington never seem to slow. Subscribe to The D.C. Brief to make sense of what matters most. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Write to Alana Abramson at Alana.Abramson@time.com.