Joe Scarborough on Wednesday called President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE’s comments about the press “unambiguously un-American,” after the president suggested a "challenge" to NBC's broadcast license.

“The MOST protected form of speech under by US Constitution is political speech,” Scarborough wrote. “Donald Trump's statement is unambiguously un-American.”

The MOST protected form of speech under by US Constitution is political speech. Donald Trump's statement is unambiguously un-American. https://t.co/SyfhsjC566 — Joe Scarborough (@JoeNBC) October 11, 2017

The president has long been a critic of the media’s coverage of him, often referring to stories about him as “fake news.”

“It’s frankly disgusting the way the press is able to write whatever they want to write, and people should look into it,” Trump said to a group of reporters on Wednesday.

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The president’s criticism of the media has been directed toward NBC this week, after the network reported that Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE called the president a “moron," and that Trump suggested increasing the nation's nuclear arsenal.

Earlier on Wednesday, Trump tweeted other jabs at NBC.

With all of the Fake News coming out of NBC and the Networks, at what point is it appropriate to challenge their License? Bad for country! — Donald J. Trump (@realDonaldTrump) October 11, 2017

The "Morning Joe" host has been an increasingly harsh critic of Trump, and said earlier Wednesday that the destruction of the GOP will be a significant part of Trump’s legacy.