Amy Coney Barrett was on Monday night confirmed to the United States Supreme Court in a narrow 52-48 vote.
The 48-year old is becoming the 115th justice of the United States Supreme Court.
Justice Clarence Thomas administered the Constitutional Oath to Barrett before a crowd of about 200.
She will be able to participate in the court after taking the judicial oath administered by Chief Justice John Roberts in a private ceremony at the court on Tuesday.
“I will do my job without any fear or favor,” Barrett told the crowd. She said that “it is the job of judge to resist her policy preferences.”
Barrett, who is conservative, replaces the late liberal icon Ruth Bader Ginsburg who passed away last month.
Barrett is President Trump’s third justice on the court.
Republicans ignored past precedent to advance the nomination of a staunch conservative whose vote could be the deciding one on upcoming cases involving the Affordable Care Act, abortion rights and voting right.
Her confirmation solidifies a 6-3 conservative majority on the high court, and may affect how cases are decided for decades.
Every Republican Senator, except Susan Collins voted in favor of Barrett’s confirmation, while no Democrats did.
“This is a momentous day for America,” Trump at the swearing-in event on the South Lawn at the White House.