(CNN) President Donald Trump disparaged Rep. Adam Schiff in a profane tweet Sunday, misspelling his name "Schitt" and accusing the likely incoming House Intelligence chairman of baselessly criticizing the appointment of acting Attorney General Matt Whitaker.

"So funny to see little Adam Schitt (D-CA) talking about the fact that Acting Attorney General Matt Whitaker was not approved by the Senate, but not mentioning the fact that Bob Mueller (who is highly conflicted) was not approved by the Senate!" Trump wrote

Special counsel Robert Mueller was appointed by Deputy Attorney General Rod Rosenstein, and like many other Department of Justice appointees, he did not require Senate confirmation for the position.

The White House did not immediately return CNN's request for comment Sunday evening on whether Trump purposely misspelled Schiff's name.

Democrats have criticized Trump's appointment of Whitaker, who now oversees Mueller's probe into Russian interference in the 2016 election, citing the appointee's past criticisms of the investigation.

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