Kavanaugh was accused by several women of sexual misconduct, including California professor Dr Christine Blasey Ford, who testified under oath that he assaulted her at a party when the two were in high school.
Trump lauded Kavanaugh as a "brilliant jurist" and blamed Democrats for the focus on decades-old allegations of sexual misconduct that dominated debate in the weeks before the nominee's Senate confirmation on Saturday.
So, for Democrats, such as Rep. Jerrold Nadler of NY, to say that they are going to investigate Kavanaugh for perjury and related issues if the Democrats take the House and/or Senate is not only premature, but a bad mistake, and one that will only redound to the Democrats' detriment.
A separate, public swearing-in ceremony is planned for 7:00 pm (2300 GMT) Monday in the White House's East Room.
One of Kavanaugh's most vocal supporters, Sen.
"We all toughed it out together and I have to thank the Republican senators that fought so hard for this because it wasn't easy", Trump said. Eighty-five percent of all voters in these districts say the Supreme Court is either important or extremely important in deciding their vote for Congress this year. Kavanaugh was confirmed by the smallest margin in the history of the Supreme Court (50-48), highlighting just how partisan this vote was, and with Republicans in the majority, they always had the upper hand.
President Trump took to Twitter on Thursday to say the Federal Bureau of Investigation report vindicated his nominee and expressed optimism about Republican chances in the November midterm elections, where control of the House of Representatives and Senate could be at stake.
He was officially sworn in hours after the Senate narrowly confirmed him Saturday to a lifetime seat on the country's highest court.
Melania Trump has tea with Kenya's 1st lady
First lady Melania Trump was nearly knocked down by a baby elephant on Friday while on safari in Nairobi National Park in Kenya. Later during a visit at the US embassy in Malawi, the first lady called her visit to the school an "amazing experience".
But McConnell did have a Plan B in mind to quickly pivot to a new nominee if there wasn't enough support in the Senate for Kavanaugh. Democrats point to the flood of women who have spoken out about their own assaults following Ford's testimony before the Senate Judiciary Committee. Kavanaugh argued that the agency should have had more time to find a sponsor for the minor to live with before she made the decision to end her pregnancy.
'He's a great person, and it was very, very unfair what happened to him, ' Trump said.
"I thought the way they behaved was absolutely atrocious".
Ford previously told the Senate Judiciary Committee she was forced to leave her home with her family on September 16.
Mr Trump has now put his stamp on the court with his second justice in as many years. "I had never been more [angry] in my life".
"Now the people are going to have to decide", the Minnesota Democrat said.
An NPR/PBS NewsHour/Marist poll released Wednesday indicated that the battle over Kavanaugh's nomination had helped Republicans close the enthusiasm gap with Democrats, who are energized by Trump's surprise win in 2016.
She acknowledged the anguish of the protesters who interrupted the historic Senate vote, telling reporters afterward that "I was closing my eyes and praying".