Karine Jean-Pierre made history on Tuesday when presumptive Democratic presidential nominee Joe Biden unveiled her as chief of staff for his running mate, who he later announced was California Sen. Kamala Harris.

On Tuesday morning, Biden's campaign discussed the team it was designing for his vice presidential candidate and said Jean-Pierre would take the lead, making her the first Black chief of staff for a vice presidential nominee, reports The Hill.

Jean-Pierre has spent over a decade in politics and worked with former President Barack Obama during his first term and on his reelection campaign. She served as chief public affairs officer for MoveOn before joining the Biden campaign, according to NBC News.