Watch: Elizabeth Warren Announces 2020 Presidential Run

U.S. Sen. Elizabeth Warren officially announced her 2020 presidential run Saturday. Warren, the senior Democratic senator for Massachusetts, launched an exploratory committee in late December and has long been considered a potential entrant in what is expected to be a crowded Democratic party.

Warren, 69, is made the announcement Saturday morning in Lawrence. She told the crowd her campaign will not be accepting PAC money or money from federal lobbyists and urged her fellow candidates to do the same.

"We all want a country where every American – not just the ones who hire armies of lobbyists and lawyers – everyone can participate in democracy," Warren said.

Watch the live stream from NBC News below.

A liberal darling, Warren caught the public's attention taking hard stances against large corporations. She played a major role in creating the Consumer Financial Protection Bureau in 2007, an agency that has been muted by the Trump administration.

At a campaign appearance in New Hampshire in January, Warren said she has put together "the biggest anti-corruption proposal since Watergate," which would "end lobbying as we know it, make the Supreme Court follow basic ethics rules and make everyone who runs for federal public office put their tax returns online."

Warren said more power should be given to unions, workers and consumers.

The senator has a public, nasty rivalry with President Trump, who has called her "Pocahontas" on many occasions in reference to her claimed Native American ancestry. The topic of her heritage has frequently landed her in hot water, most recently after it was discovered she listed herself as "American Indian" on a Texas legal bar registration form in 1986.

A DNA analysis released in October confirmed Warren's claims, but it opened her up to further attacks from both sides of the political aisle.

Warren, an Oklahoma native, was a Harvard law professor before becoming senator in 2012 with a victory over Scott Brown. She easily fended off Geoff Diehl in the 2018 midterms.

Photo: Elizabeth Warren speaks during an organizing event for her 2020 presidential exploratory committee at Manchester Community College on January 12, 2019. (Photo by Scott Eisen/Getty Images)