President Donald Trump watches as Supreme Court Justice Anthony Kennedy administers the judicial oath to Justice Neil Gorsuch during a re-enactment in the Rose Garden of the White House White House in Washington, Monday, April 10, 2017.
Trump also acknowledged the magnitude of the moment.
Unlike Trump, who is completely ignorant of the Constitution he swore to uphold (he vowed in one campaign appearance to defend a non-existent "Article XII"), Gorsuch is a highly educated lawyer who is a conscious participant in the ultra-right project to demolish the Bill of Rights and establish an authoritarian state in America.
Earlier in the day, Chief Justice John Roberts administered the constitutional oath in a private ceremony inside the Justices' Conference Room at the court. Gorsuch is the 113th judge to serve on the United States Supreme Court.
"I will do all my powers permit to be a faithful servant of the Constitution and laws of this great nation", he said.
Trump recognized Scalia's wife, Maureen, who was also present for Monday's ceremony at the White House.
With President Donald Trump, who nominated Gorsuch, looking on, the 49-year-old justice took his judicial oath in the White House Rose Garden.
Gorsuch's confirmation comes at the end of a long, unseemly, petulant, politically and civically corrosive sequence of events that has gone on now for more than a year, and from which nearly no one involved has emerged unsullied.
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Gray pledges to be a "willing partner" for the new administration. "I thought that the country would wake up at some point". If no one wins 50 percent of the vote plus one, the top two candidates will face off in a June runoff.
Senate Democrats were still fuming over the treatment of Garland and threatened to filibuster Gorsuch's confirmation last week.
And he can begin shaping the court's caseload, providing yet another vote for which cases the justices will hear.
Senate Democrats, upon the announcement of Gorsuch's nomination, filibustered the hearings, feeling that Gorsuch was unfit to serve.
In some ways, Gorsuch is the prototypical justice.
Gorsuch's seat fills the vacancy left by the death of Justice Antonin Scalia more than a year ago and restores a consevative majority in the Supreme Court.
On Thursday, Senate Majority Leader Mitch McConnell triggered a legislative manoeuvre known as the "nuclear option" when Republicans lacked the 60 votes required to end debate on Mr Gorsuch.
The case involves Trinity Lutheran Church in Columbia, Missouri, which applied for a grant to help non profit groups fund resurfacing of their playgrounds with rubber from recycled trees.
The swearing-in of Justice Neil M. Gorsuch on Monday restores the Supreme Court to full strength for the first time in almost 14 months and sets the stage for further conservative victories that could start accumulating quickly.