The Lisa Cook lawsuit is her federal court challenge to President Donald Trump’s August 25, 2025 attempt to fire her from the Federal Reserve Board of Governors over allegations that she committed mortgage fraud in 2021, two years before she joined the Fed. Cook sued three days later, arguing the removal violated the Federal Reserve Act’s “for cause” protection and her Fifth Amendment right to due process. Courts have kept her in her seat throughout the litigation, and the Supreme Court, which heard oral argument in January 2026, is expected to rule by summer 2026.1SCOTUSblog. Trump v. Cook, an Explainer
Why Trump Tried to Fire Cook
On August 25, 2025, Trump posted a letter on social media telling Cook she was “removed from your position on the Board of Governors of the Federal Reserve, effective immediately.”2The American Presidency Project. Letter to Federal Reserve Governor Lisa Cook Notifying Her of Her Dismissal From Office The stated basis was mortgage fraud.
The allegations came from Bill Pulte, the Trump-appointed director of the Federal Housing Finance Agency. Pulte accused Cook of listing both a condominium in Atlanta and a home in Ann Arbor, Michigan, as her primary residence on 2021 mortgage applications to obtain better interest rates. He posted images of her signatures on social media during the week of August 17, 2025, said he had received a tip from unnamed whistleblowers, and referred the matter to the Department of Justice.3The New York Times. Housing Mortgage Fraud Trump Lisa Cook4The Guardian. Bill Pulte FHFA Referral Mortgage Fraud Lisa Cook
Cook’s legal team called the allegations “flimsy,” “unproven,” and “conveniently timed,” describing the discrepancy as a clerical error. Outside experts said it was unusual for an agency head to personally make a criminal referral, since such matters typically go through an Office of Inspector General, and that investigations into mortgage occupancy fraud are rare, especially for loans not in default. House Democrats, led by Representative Maxine Waters, asked the FHFA inspector general to review how Pulte obtained and disclosed the documents.4The Guardian. Bill Pulte FHFA Referral Mortgage Fraud Lisa Cook5NBC News. Democrats Seek Probe Pulte Lisa Cook Federal Reserve
Cook was confirmed to the Fed in May 2022 and reconfirmed in September 2023 to a full fourteen-year term running through January 31, 2038.6Federal Reserve. Lisa D. Cook Biography No Federal Reserve governor has ever been fired in the agency’s 112-year history.7U.S. Supreme Court. Trump v. Cook Oral Argument Transcript
What Cook Is Arguing in Court
Cook filed suit on August 28, 2025, in the U.S. District Court for the District of Columbia, seeking a ruling that her removal was unlawful and that she remained a sitting governor.8CourtListener. Cook v. Trump Docket Her complaint rests on two claims.
The first is statutory. The Federal Reserve Act permits removal of a governor only “for cause,” and Cook argues that unproven allegations about conduct predating her appointment do not qualify. Her lawyers contend “for cause” reaches an official’s behavior in office and the faithful execution of statutory duties, not pre-appointment personal matters, and that the president cannot unilaterally rewrite what counts as cause. They call the mortgage fraud accusation pretextual, aimed at vacating a seat for Trump to fill.9CNN. Fed Lisa Cook Lawsuit
The second claim is constitutional. Because the “for cause” protection gives Cook a property interest in her office under the Fifth Amendment, she argues she was entitled to notice and an opportunity to be heard before being removed. The government has conceded it provided no such process.1SCOTUSblog. Trump v. Cook, an Explainer
What the Administration Is Arguing Back
Solicitor General D. John Sauer, representing the administration, has taken three positions. On the meaning of “for cause,” the government reads the phrase broadly to cover any reason tied to “conduct, ability, fitness, or competence,” and argues the mortgage fraud allegation qualifies as “gross negligence in financial transactions that calls into question her competence and trustworthiness as a financial regulator.”1SCOTUSblog. Trump v. Cook, an Explainer
On judicial review, the administration argues courts cannot second-guess the president’s determination that cause exists. Sauer described the lower court’s intervention as “yet another case of improper judicial interference with the President’s removal authority.”1SCOTUSblog. Trump v. Cook, an Explainer
On due process, the government’s position is that public office is not “property” under the Fifth Amendment, and that Congress did not build any notice-and-hearing requirement into the Federal Reserve Act. Its absence from the statute, the administration says, means Congress did not intend it.10U.S. Supreme Court. Trump v. Cook Supplemental Brief
How the Courts Have Ruled So Far
On September 9, 2025, Judge Jia M. Cobb granted a preliminary injunction blocking the firing, finding Cook was “substantially likely” to succeed on both claims.11FindLaw. Cook v. Trump Judge Cobb read the Federal Reserve Act’s “for cause” provision, tracing back to the Banking Act of 1935, as tied to an official’s performance in office rather than pre-appointment conduct, and rejected the government’s broader reading as lacking textual and historical support. On due process, she held that the “for cause” protection creates a property interest in the position under Cleveland Board of Education v. Loudermill (1985), and that the government’s concession of no process meant the Fifth Amendment had been violated.12U.S. Supreme Court. Trump v. Cook Appendix
On September 15, 2025, a three-judge panel of the D.C. Circuit denied the administration’s emergency stay 2–1, keeping Cook in her seat. Judge Katsas dissented, arguing that pre-appointment conduct can still bear on “conduct, ability, fitness, or competence,” and that a principal officer does not hold a property interest comparable to a civil servant’s.13CourtListener. Lisa Cook v. Donald Trump D.C. Circuit Docket12U.S. Supreme Court. Trump v. Cook Appendix
The Supreme Court then declined, on October 1, 2025, to stay the lower court order, leaving Cook in office while it took up the case for full argument.14Economic Policy Institute. Firing Federal Reserve Governor Lisa Cook
Oral Argument at the Supreme Court
The Court heard two hours of argument on January 21, 2026, with Paul D. Clement appearing for Cook and Sauer for the administration. Several justices sounded skeptical of the government.15NPR. Supreme Court Federal Reserve Lisa Cook
Justice Sotomayor called the firing “unprecedented” and suggested the complex questions deserved fuller lower-court development rather than emergency-docket treatment. Justice Jackson pressed Sauer on the absence of any evidentiary hearing, noting that the “opportunity to be heard” Cook received amounted to a social media post. Justice Barrett raised concern about being asked to quantify risks to market stability. Chief Justice Roberts asked why the parties were arguing the merits of cause at all if, as the government maintained, the president’s determination was unreviewable and courts could not order reinstatement.7U.S. Supreme Court. Trump v. Cook Oral Argument Transcript
Fed Chair Jerome Powell called the litigation “perhaps the most important legal case in the Fed’s 113-year history.”16Politico. Powell: Lisa Cook Lawsuit Is the Most Important Legal Case in the Fed’s History As of mid-2026, no decision has issued. Cook continues to serve, including as chair of the Board’s Committee on Financial Stability.17Federal Reserve. Governor Lisa D. Cook Speech
Why the Case Matters Beyond Cook
Cook’s lawsuit is one piece of a wider Trump administration effort to dismantle “for cause” removal protections at independent agencies. Since January 2025, officials have been fired at more than a dozen agencies, including the National Labor Relations Board, the Merit Systems Protection Board, and the Federal Trade Commission. The Justice Department has told Congress it will no longer defend “for cause” statutes and has asked the Supreme Court to overrule Humphrey’s Executor v. United States, the 1935 decision that lets Congress insulate independent agency heads from at-will removal.18Politico. Supreme Court Slaughter Trump Firings
The closest companion case is Trump v. Slaughter, involving fired FTC Commissioner Rebecca Slaughter. The Court heard it on December 8, 2025, and is also expected to rule by summer 2026. In Slaughter, the government has asked outright for Humphrey’s Executor to be overruled, with Sauer calling the precedent a “decaying husk.”19SCOTUSblog. Trump v. Slaughter, an Explainer
Cook’s case is legally narrower. The administration has not asked the Court to overturn Humphrey’s Executor here, focusing instead on what “for cause” means, whether courts can review the president’s cause determination, and whether Cook was owed due process. The Court has separately signaled that the Fed may sit on distinct legal ground. In Trump v. Wilcox, involving NLRB officials, it described the Fed as “a uniquely structured, quasi-private entity that follows in the distinct historical tradition of the First and Second Banks of the United States.”20SCOTUSblog. The Supreme Court and Whether the Fed Is Special Some scholars have suggested the Court could preserve protections for the Fed while narrowing them elsewhere.21Partnership for Public Service. Dismantling Independence Whether it actually draws that line, and how firmly, will become clear when the decisions in Cook and Slaughter arrive.