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President Trump had a busy Sunday on Twitter, beginning with a volley of retweets attacking Fox & Friends host Ed Henry after an exchange with conservative backer Mark Levin — and one of the retweets was of shark-themed Trump parody account.

Not all of Trump's tweets were so amusing. The president accused House Intelligence Chair Adam Schiff (D-Calif.) of "treason" for unclear reasons; appeared to threaten the whistleblower who filed a complaint about concerns over Trump's Ukraine call — in doing so, Trump misrepresented and arguably broke the law — and he quoted one of his most fervent and controversial Evangelical Christian supporters, Dallas pastor Robert Jeffress, saying on Fox & Friends that, according to Trump's transcription, removing Trump through impeachment "will cause a Civil War–like fracture in this Nation from which our Country will never heal."

Rep. Adam Kinzinger (R-Ill.) called Trump's tweet "beyond repugnant."

Historian Kevin Kruse explained why it makes no sense.

No president has ever been removed from office via impeachment, though Richard Nixon resigned when it appeared such removal was imminent.