Trump nominated Kavanaugh to replace Justice Anthony Kennedy, who had been a swing vote on a court now divided between four conservative and four liberal justices.
Trump said: "If I thought he was guilty of something like this. yeah, sure".
The committee could vote on Mr Kavanaugh's confirmation tomorrow, with a final Senate vote early next week.
"'I'll say this, she's attractive and she's a nice person", he said as he headed to an elevator bank in the Senate office building.
Grassley has cut Mitchell off to tell her it's the Democrats' turn for questioning, which isn't exactly helping the optics goal of bringing in Mitchell in the first place - to avoid awkward moments from the male Republicans. "I did not do this back in high school or at any time", he said.
Blumenthal also hit out at Trump for failing to authorize an FBI investigation of Blasey Ford's allegations. He also submitted two written statements, one on Monday and a second, more in-depth statement on Wednesday.
Swetnick, in a sworn statement released by Avenatti, said she attended more than 10 parties also attended by Kavanaugh while they were high school students in the early 1980s in suburban Maryland.
"I categorically and unequivocally deny the allegation against me by Dr. Ford", Kavanaugh said in the statement. "But I have never done that to her or to anyone". You know why? Because I've had a lot of charges made against me.
Kavanaugh was scheduled to appear at a Senate Judiciary Committee hearing along with Ford on Friday (NZT).
New accuser says she witnessed sexual abuses by Brett Kavanaugh
Sarah Huckabee Sanders responded by saying the White House "stands with Kavanaugh" - but Trump couldn't leave it at that. The woman, Julie Swetnick , said that she was the victim of one of these gang rapes in approximately 1982.
Two additional women have come forward with accusations against Kavanaugh, Deborah Ramirez and Julie Swetnick.
The previously unknown interviews could add a new layer to the evolving saga on the eve of a possible explosive hearing between Kavanaugh and Ford, though it's unknown whether the men's claims are being taken seriously.
'Is Brett Kavanaugh who we want in the most prestigious court in the country.
Attorney Avenatti tweeted a sworn testimony from the third accuser Swetnick.
At a press conference in NY on Wednesday afternoon, President Donald Trump declined to comment on Swetnick's claims, saying he was a bit preoccupied at the United Nations to pay attention to the domestic scandals of the day, but dismissed her lawyer Michael Avenatti as a "lowlife". However, he has said he would listen to what Ford has to say at the hearing and, if persuaded, could withdraw the nomination.
In a loud voice, the conservative jurist told the Senate Judiciary Committee that his confirmation process had become "a national disgrace".
"These are last minute smears, pure and simple", he said, adding that while he was "not perfect" in high school he "never did anything remotely resembling what Dr. Ford describes".
Ahead of Thursday's hearing on sexual misconduct allegations made against Supreme Court nominee Brett Kavanaugh, Supreme Court Justice Ruth Bader Ginsburg applauded "women coming together in numbers" with #MeToo reports.