The U.S. Supreme Court has temporarily upheld the enforcement of the Horseracing Integrity and Safety Act, which establishes national standards for medication and doping in horse racing. This decision comes after the Fifth U.S. Circuit Court of Appeals ruled that the law's enforcement provisions were unconstitutional, citing concerns over the separation of powers by granting excessive authority to a private regulator. The Horseracing Integrity and Safety Act, signed into law by former President Donald Trump in 2020, was intended to enhance the safety and integrity of horse racing, particularly in light of recent doping scandals and incidents involving racehorse fatalities. Legal challenges continue, with petitions filed arguing that the law violates the Appointments Clause by allowing a nonprofit corporation to regulate the industry.