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• The Cook ruling protects Fed monetary-policy independence for now, reducing near-term risks of political interference in FOMC decisions and supporting USD credibility.
• The ruling is not a full shield: Cook may still face future legal challenges, and Fed regulatory functions may receive weaker protection.
• Trump v. Slaughter weakens independence protections for agencies such as the FTC, SEC, FDIC and CFTC, increasing regulatory volatility for investors.
• The verdicts create a two-track regime: the Fed remains relatively protected, while broader US financial regulation may become more politically responsive.
• For the USD, the short-term signal is supportive, but long-term concerns persist around deficits, weaker-dollar policy stance, and institutional regime risk, which is rising after the latest Supreme Court ruling in Trump v. Slaughter. The ruling opens the door to a higher volatility around a substantial change in political regime (e.g., following the election of a new US President), which is likely to affect asset prices that are heavily dependent on US regulatory oversight. This dynamic will present both opportunities and risks for investors.
What happened and why the Supreme Court had to decide
Lisa Cook’s case started against a broader political backdrop: in 2025, President Trump repeatedly pressed the Federal Reserve to cut its key policy rate, arguing that lower borrowing costs would support households, businesses and the government. Cook, a Fed governor who resisted those calls, later became a target of the administration, which accused her of mortgage fraud – allegations she has denied. Trump’s criticism was directed especially at then Fed Chair Jerome Powell, nominated by Trump in 2017 but later criticised for not easing policy fast enough. The confrontation even reached beyond words. In January 2026, the Justice Department issued grand jury subpoenas in a criminal probe into cost overruns on Fed building renovations, a probe Powell publicly described as a pretext to pressure the central bank for lower rates. A federal judge quashed those subpoenas in March 2026. It is against this charged background that President Trump’s attempted removal of Fed Governor Lisa Cook must be understood. Cook was appointed in 2022 and later confirmed for a full 14-year term running until 2038. In August 2025, the Director of the Federal Housing Finance Agency publicly alleged that Cook had made false statements on mortgage documents in 2021, before she joined the Fed, by treating two properties as principal residences. Cook denied wrongdoing. Trump quickly called for her resignation and then sent a letter saying he had “reason to believe” she may have made false statements and that he no longer had confidence in her integrity. He therefore fought to remove her “for cause” under the Federal Reserve Act. Cook sued, arguing that the removal was not legal and that she had received neither proper notice nor a real chance to respond. Lower courts blocked the removal, and the Supreme Court had to decide whether Cook should remain in office while litigation continued. The question was not yet whether the mortgage allegations were true, but whether the President could remove a Fed Governor before courts had fully reviewed the lawfulness, evidence, and process of that removal.
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