Over two dozen Democratic lawmakers on Monday filed a brief with the U.S. Court of Appeals for the District of Columbia Circuit in support of Leandra English's authority to run the Consumer Financial Protection Bureau (CFPB) over President Trump's appointment, Mick Mulvaney Mick MulvaneyMick Mulvaney to start hedge fund Fauci says positive White House task force reports don't always match what he hears on the ground Bottom line MORE.

Twenty-five current Senate and House lawmakers filed a friend of the court brief arguing that English, who was elevated by the CFPB's director on his last day, should serve as acting director of the consumer bureau until a permanent director, nominated by the president, is confirmed by the Senate.

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Trump, in a move apparently meant to supersede English's appointment, named Mulvaney, the director of the Office of Management and Budget, as acting director hours after English was promoted.

“President Trump is entitled to choose who the next Director of the Bureau will be, but he must nominate that person, and the Senate must agree to confirm him or her,” the lawmakers wrote. “Until that happens, Dodd-Frank makes clear who should be running the Bureau: its Deputy Director.”

They also criticized Trump's appointment of Mulvaney as "a designee who reflects the President’s policy preferences but has not been subject to the check of Senate confirmation."

Among some of the Democratic lawmakers to sign the court brief include Senate Minority Leader Charles Schumer Chuck SchumerJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee CNN's Toobin: Democrats are 'wimps' who won't 'have the guts' to add Supreme Court seats Republican senator says plans to confirm justice before election 'completely consistent with the precedent' MORE (N.Y.), Sen. Elizabeth Warren Elizabeth WarrenJudd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? MORE (Mass.), Sen. Sherrod Brown Sherrod Campbell BrownBipartisan praise pours in after Ginsburg's death Emboldened Democrats haggle over 2021 agenda Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election MORE (Ohio), House Minority Leader Nancy Pelosi Nancy PelosiTrump puts Supreme Court fight at center of Ohio rally CDC causes new storm by pulling coronavirus guidance Overnight Health Care: CDC pulls revised guidance on coronavirus | Government watchdog finds supply shortages are harming US response | As virus pummels US, Europe sees its own spike MORE (Calif.), House Minority Whip Steny Hoyer Steny Hamilton HoyerWhite House opposes House energy bill as Democrats promise climate action This week: Supreme Court fight over Ginsburg's seat upends Congress's agenda House Democrats postpone vote on marijuana decriminalization bill MORE (Md.), Rep. Maxine Waters (Calif.) and Rep. Keith Ellison Keith Maurice EllisonOfficers in George Floyd's death appear in court, motion for separate trials Ex-Minneapolis officer involved in Floyd death asks judge to dismiss murder charge Over 50 current, former law enforcement professionals sign letter urging Congress to decriminalize marijuana MORE (Minn).

A dramatic showdown began on Friday after the White House and the CFPB butted heads over who will lead the Wall Street watchdog agency following Richard Cordray's resignation.

Before stepping down, Cordray named his chief of staff, English, to the deputy director position. The 2010 Dodd-Frank Act says the deputy director will lead the agency if there is not a permanent director.

Both officials claimed they are the rightful acting director of the CFPB on Monday, entangling current employees in an escalating legal dispute.