Sen. Kamala Harris (D-Calif.) on Monday called for Twitter to suspend President Trump‘s account in light of his continued attacks on lawmakers and the whistleblower responsible for a complaint focused on the president’s dealings with Ukraine.

“The president’s tweets and his behavior about this are just further evidence of the fact that he uses his power in a way that is designed to beat people down instead of lift people up,” Harris, a 2020 presidential candidate, said on CNN. “If you look at what he’s been tweeting today directed at the whistleblower, I frankly think that based on this and all we’ve seen before, including attacking members of Congress, that his Twitter account should be suspended.”

Harris went on to argue that “there is plenty of evidence to suggest that [Trump] is irresponsible with his words in a way that could result in harm to other people.”

Twitter declined to comment when contacted by The Hill.

Trump has continually used Twitter throughout his presidency to lash out at political opponents. In recent days, the president has used the platform to escalate attacks against an intelligence community whistleblower responsible for a complaint regarding his interactions with Ukrainian President Volodymyr Zelensky.

The complaint, which was released last week, accuses Trump of a broad effort to pressure Ukraine into investigating 2020 presidential candidate Joe Biden and his son Hunter Biden over unsubstantiated allegations of corruption.

Trump tweeted on Sunday that the complaint represented him in a “totally inaccurate and fraudulent way” and suggested that the figure was “spying.”

“Was this person SPYING on the U.S. President? Big Consequences!” he wrote.

In a series of tweets early Monday, the president also questioned whether House Intelligence Committee Chairman Adam Schiff (D-Calif.) should be arrested for treason for exaggerating parts of a July 25 phone call Trump had with Zelensky.

“Adam Schiff illegally made up a FAKE & terrible statement, pretended it to be mine as the most important part of my call to the Ukrainian President, and read it aloud to Congress and the American people,” Trump tweeted. “It bore NO relationship to what I said on the call. Arrest for Treason?”

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