While Trump apologized on behalf of the nation for "the bad pain and suffering" Kavanaugh and his family had experienced and declared him "proven innocent", the new justice assured Americans that he would be fair and was taking the job with "no bitterness".
Kavanaugh asked questions of both sides in arguments over increased prison sentences for repeat offenders. SCOTUS now has a 5-4 Conservative majority, and the Bench could swing further to the right if Donald Trump gets a second term and therefore, the chance to appoint replacements for liberal Justices Ruth Bader Ginsburg, 85, and Stephen Breyer, 80.
Susan Collins' vote in favor of confirming Brett Kavanaugh to the Supreme Court, an online fund already has generated more than $3.6 million for whichever Democrat challenges her when she is up for re-election in 2020, the National Post reported on Tuesday.
He took his seat at the right end of the mahogany bench in the ornate courtroom - the location assigned to the court's juniormost member - and wore traditional black robes like the other justices.
Trump began a ceremonial swearing-in for the Supreme Court justice in the East Room of the White House with the politicized and controversial declaration that Kavanaugh and his family deserved an apology for the confirmation process.
Kavanaugh knows numerous justices, who all showed up at the White House Monday night.
The president - whose Republicans fear losing at least the lower chamber of Congress - predicted that Democrats would pay for their attempts to block the confirmation, especially during the lurid debate over decades-old sexual assault allegations.More news: Wozniacki wins 30th title with China Open victory
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Democrats had fought tooth and nail to stop Kavanaugh´s candidacy, claiming that the accomplished, conservative-minded judge was not suited to the Supreme Court.
Kavanaugh's nomination had appeared safe until Christine Blasey Ford, a university professor in California, last month went public with allegations that Kavanaugh had sexually assaulted her in 1982 when they were high school students in Maryland.
The cases, involving a Florida robbery and burglaries in Tennessee and Arkansas, challenged the types of crimes that qualify as violent felonies under that law and can lead to 15-year mandatory minimum sentences. Kagan, who hired him to teach at Harvard Law when she served as dean, sits next to Kavanaugh. Kavanaugh denied those allegations.
In a White House ceremony that should have been a unifying process for the United States, he said the judge had been the victim of a "campaign of political and personal destruction based on lies and deception".
178 years is what it took for a person of colour to join the court. "A brilliant jurist, a man that did nothing wrong, a man that was caught up in a hoax that was set up by the Democrats using the Democrats' lawyers, and now they want to impeach him".
"I think a lot of Democrats are going to vote Republican", he said in his earlier comments outside the White House.
Even before the allegations of sexual misconduct surfaced, some Democrats questioned Kavanaugh's truthfulness during his initial Senate confirmation hearing.