Members of a group linked to liberal operative and Hillary Clinton loyalist David Brock are involved in a new lawsuit filed by the Democratic attorneys general of the District of Columbia and Maryland against President Trump over his private businesses.

The lawsuit, which was filed Monday in the U.S District Court in Greenbelt, Md., focuses on the Constitution’s emoluments clause, which bars foreign governments from paying U.S. officials, the Washington Post reported.

“The lawsuit alleges violations by the President of two distinct yet related provisions of the U.S. Constitution that seek to make certain that he faithfully serves the American people, free from compromising financial entanglements with foreign and domestic governments and officials,” the lawsuit Suits

arl Racine, D.C.’s attorney general, said at a press conference early Monday that Trump is “flagrantly violating the Constitution” and that “never in the history of this country have we had a president with these kinds of extensive business entanglements.”

“We know foreign governments are spending [at the Trump International Hotel] to curry favor with the President of the United States,” Racine said. “The Saudis are already spending hundreds of thousands of dollars at the Trump hotel.”

The lawsuit filed by D.C. and Maryland mimics that of a lawsuit filed earlier this year by Citizens for Responsibility and Ethics in Washington (CREW), a liberal legal advocacy group once led by Media Matters for America founder David Brock.

Noah Bookbinder, CREW’s executive director, appears on the lawsuit filed by the Democratic attorneys general. Stuart McPhail, CREW’s litigation counsel, is also listed on the lawsuit. The attorneys general are hoping the lawsuit will lead to the release of Trump’s tax returns.

Earlier this year, David Brock held a conference with more than 100 liberal donors at the posh Turnberry Isle Resort in Aventura, Fla., mapping out how Democrats would “kick Donald Trump’s ass.”