Rep. Eric Swalwell Eric Michael SwalwellSwalwell calls for creation of presidential crimes commission to investigate Trump when he leaves office 'This already exists': Democrats seize on potential Trump executive order on preexisting conditions Swalwell: Barr has taken Michael Cohen's job as Trump's fixer MORE (D-Calif.) took aim at President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE on Twitter early Wednesday, saying that the president was elected only for his campaign promise to nominate conservative justices to the Supreme Court.

"No kidding. Did someone slip you truth serum?" Swalwell tweeted. "You're right — no one elected you for: 1) vision 2) compassion or 3) integrity."

No kidding. Did someone slip you truth serum? You’re right — no one elected you for: 1) vision 2) compassion or 3) integrity. https://t.co/W7JD0NUzs6 — Rep. Eric Swalwell (@RepSwalwell) September 19, 2018

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Swalwell, who has said he would consider a 2020 presidential run following this year's midterm elections, was responding to a tweet in which the president said putting conservative justices on the Supreme Court was one of the "main reasons I got elected."

"The Supreme Court is one of the main reasons I got elected President," Trump wrote. "I hope Republican voters, and others, are watching, and studying, the Democrats Playbook."

The Supreme Court is one of the main reasons I got elected President. I hope Republican Voters, and others, are watching, and studying, the Democrats Playbook. — Donald J. Trump (@realDonaldTrump) September 19, 2018

Swalwell's comments come as Trump's Supreme Court nominee, Brett Kavanaugh, faces accusations from a California professor that he sexually assaulted her in the early 1980s, when the two were in high school.

Kavanaugh, who was expected to be confirmed handily by the Senate for the high court, has said he will testify publicly against his accuser, Christine Blasey Ford. Ford says she will not testify until the FBI investigates her claims.

Republicans aim to limit further delays of a confirmation vote they are expected to win — a vote which was originally set to take place this Thursday. Republicans have accused Democrats of using the sexual assault allegation against Kavanaugh to delay his confirmation vote until after the midterms.

Democrats who back Ford say they support an investigation, with 114 House Democrats writing a letter this week calling on the Senate to delay a vote. In the letter, the lawmakers argued it would be inappropriate to move forward with the confirmation vote without a probe due to the seriousness of the allegations.