President Biden has chosen Judge Ketanji Brown Jackson as his pick to replace retiring Justice Stephen Breyer on the U.S. Supreme Court — fulfilling his campaign promise of appointing a Black woman to the nation’s highest court.

Biden formally announced Jackson, 51, as his nominee at the White House on Friday afternoon.

“Judge Jackson is an exceptionally qualified nominee as well as a historic nominee,” the White House said in a statement. “And the Senate should move forward with a fair and timely hearing and confirmation.”

Here are 5 things to know about Jackson.

She clerked for Breyer

A graduate of Harvard Law School, Jackson served as a law clerk to three federal judges, including Breyer on the Supreme Court.

As Breyer’s clerk during the court’s 1999-2000 term, Jackson “learned up close how important it is for a Supreme Court Justice to build consensus and speak to a mainstream understanding of the Constitution,” the White House said in its announcement.

According to the Boston Globe, the 83-year-old Breyer considers Jackson a member of his extended “family.”

Confirmed to her current post with bipartisan support

Biden nominated Jackson to the U.S. Court of Appeals for the District of Columbia Circuit last summer, and she was confirmed by the Senate in a 53-44 vote, with Republican Sens. Susan Collins of Maine, Lisa Murkowski of Alaska and Lindsey Graham of South Carolina voting in her favor.

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But in a tweet early Friday, Graham said that the nomination of Jackson “means the radical Left has won President Biden over yet again.”

Graham had heaped praise on U.S. District Judge J. Michelle Childs, who was speculated to be one of Biden’s leading contenders for the Supreme Court.

“She would be somebody, I think, that could bring the Senate together and probably get more than 60 votes,” Graham said on ABC’s “This Week With George Stephanopoulos” earlier this month. “Anyone else would be problematic.”

Life experiences not race play a role in her work

Born in Washington, D.C., in 1970, Jackson moved to Florida as a young child with her parents, graduates of historically Black colleges and universities who worked as public school teachers.

During her confirmation hearing for the U.S. Court of Appeals, Sen. John Cornyn, R-Texas, asked Jackson how race would affect her job.

“I don’t think that race plays a role in the kind of judge that I have been and would be. I’m doing a certain thing when I get my cases,” Jackson replied. “I’m looking at the arguments, the facts and the law. I’m methodically and intentionally setting aside personal views [and] any other inappropriate considerations, and I would think that race would be the kind of thing that would be inappropriate to inject into my evaluation of a case.”

Jackson also made it clear that she believed her perspective was still crucial to the court.

“I’ve experienced life in perhaps a different way than some of my colleagues because of who I am, and that might be valuable — I hope it would be valuable — if I was confirmed to the court,” she said.

She was a public defender

If confirmed, Jackson would be the first Supreme Court justice since Thurgood Marshall to have represented indigent criminal defendants.

During her April confirmation hearing, Jackson discussed how her experience as a public defender would benefit her approach to cases on the bench.

“One of the things that I do now is I take extra care to communicate with the defendants who come before me in the courtroom,” Jackson said. “I speak to them directly, and not just to their lawyers. I use their names.”

In addition to her public-defender work, Jackson served as vice chairman of the U.S. Sentencing Commission, working to reduce the penalties for crack cocaine offenders.

Ordered Trump’s former counsel to testify in his impeachment inquiry
In her work as a federal judge, one of Jackson’s most prominent rulings was a 2019 decision in which she ordered former Trump White House counsel Don McGahn to testify in the impeachment inquiry against then-President Donald Trump.

McGahn, a key witness in Robert Mueller’s investigation, was called to testify by the House Judiciary Committee to determine if there were grounds for Trump’s impeachment. Trump ordered McGahn not to testify on the grounds that his role as the president’s close adviser had granted him immunity.

In her 118-page decision, Jackson declared that immunity “simply does not exist,” even for the commander in chief.

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“Presidents are not kings,” she wrote. “This means that they do not have subjects bound by loyalty or blood, whose destiny they are entitled to control.”

She’s related by marriage to Paul Ryan
Jackson met her husband, Patrick Jackson, when the two were at Harvard College. He is a surgeon and they have two daughters.

His twin brother is the brother-in-law of Janna Ryan, wife of former House Speaker Paul Ryan.

“Janna and I are incredibly happy for Ketanji and her entire family,” Ryan tweeted on Friday. “Our politics may differ, but my praise for Ketanji’s intellect, for her character, and for her integrity, is unequivocal.”