Actor Alec Baldwin has raised concerns about Donald Trump calling "rigged" media "the enemy of the people" in a tirade against Saturday Night Live, saying it could put him and his family in danger.

Key points: Mr Trump suggested the NBC should face retribution for airing "Republican hit jobs"

Mr Trump suggested the NBC should face retribution for airing "Republican hit jobs" Baldwin questioned whether the President's comments could be construed as a threat

Baldwin questioned whether the President's comments could be construed as a threat The actor said the national emergency declaration was "fake" while impersonating the President

Mr Trump lashed out after Baldwin, who regularly impersonates the President on the NBC comedy show, appeared in a sketch lampooning him for declaring a national emergency at the US-Mexico border.

"You can all see why I gotta fake this national emergency," Baldwin said in the skit.

"I have to because I want to, it's really simple."

Mr Trump took to Twitter after the episode aired in the US, saying there was "nothing funny" about Saturday Night Live.

"Question is, how do the networks get away with these total Republican hit jobs without retribution?" he said.

"Very unfair and should be looked into. This is the real collusion!"

He followed this up with a tweet calling "corrupt" media the "enemy of the people".

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Baldwin responded to the President's Twitter comments the following day.

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The 'Trumpiest Trump'

Baldwin first portrayed Mr Trump on Saturday Night Live during the presidential campaign in 2016.

The episode was praised on social media, with fans of the show saying Baldwin's impersonation was "scary good" and calling him the "Trumpiest Trump".

But Mr Trump was not impressed, saying Baldwin's portrayal of him "stinks".

"Time to retire the boring and unfunny show," he said on Twitter.

Baldwin has returned to Saturday Night Live multiple times to reprise the role since Mr Trump's move to the White House, much to the dismay of the President.

Baldwin appeared as Mr Trump in mock press conference during a Saturday Night Live sketch. ( Facebook: Saturday Night Live )

Last December, Mr Trump took aim at the show after a skit imagined a world in which he was not elected as president.

"A real scandal is the one sided coverage, hour by hour, of networks like NBC and Democrat spin machines like Saturday Night Live," he said on Twitter.

"It is all nothing less than unfair news coverage and Dem commercials."

While he has been vocal about his dislike of Saturday Night Live in recent years, Mr Trump once hosted an episode of the show in 2015.