Justice Brett Kavanaugh, fresh off a confirmation process that featured one of the most polarizing and politicized hearings in modern times, will take the bench on Tuesday for the start of a new era that is expected to take the court decidedly to the right.
ActBlue - an online fundraising platform for Democrats - raised almost $10 million on October 5 - the day the Senate held a procedural vote on moving Kavanaugh's nomination forward - and another $9 million on October 6, the day the upper chamber formally confirmed him.
"We will not forget!" the group shouted - a reference to the accusations of sexual assault that threatened to derail Kavanaugh's nomination, allegations that the 53-year-old strongly denied.
Mr Kavanaugh moved to the Supreme Court after spending 12 years as a judge on the influential U.S. Court of Appeals in Washington, building a conservative judicial record.
While Trump apologized on behalf of the nation for "the awful pain and suffering" Kavanaugh and his family had suffered and declared him "proven innocent", the new justice assured Americans that he would be fair and was taking the job with "no bitterness".
Mr Trump said he was "very proud" of Justice Kavanaugh and his family, and disparaged the anti-Kavanaugh protesters.
The other eight justices were all in attendance for Monday's swearing-in by retired justice Anthony Kennedy at an entirely ceremonial event.
Brett Kavanaugh waits before being sworn-in as Associate Justice of the US Supreme Court in the East room of the White House in Washington, DC.
Lee explained that there were many possibilities to explain what the confirmation vote indicated about Kavanaugh's innocence. Every sitting member of the Supreme Court was present at the ceremony.
A spokesperson at the National Republican Congressional Committee, which works on House races, said it saw a 418 percent increase in online donations in the first week of October - when Kavanaugh was undergoing an FBI investigation - compared to the first week of September. Throughout his exceptionally turbulent confirmation process, Kavanaugh touted his long history of empowering women in the workplace, pointing out how he's actually practiced what so many others preach.
Trump said he once told Kavanaugh that his confirmation would be a "piece of cake".
Ultimately, Kavanaugh was confirmed by a vote of 50-48. "It is not a partisan or political institution", Kavanaugh said.
Trump's first Supreme Court appointee, Neil Gorsuch, also took part in a White House oath ceremony. Kavanaugh has also hired four clerks, all women, the first time that has happened.
"What we decide is whether the state - which has the burden of proving guilt beyond any reasonable doubt, the highest standard in our legal system - has met that burden of proof", Beskind said.
Republicans argue that the controversy over Kavanaugh has engaged conservative voters who otherwise have been apathetic to the midterm elections.
Two years ago, McConnell blocked a vote on Garland, citing what he said was a tradition of not filling vacancies in a presidential election year.