Maddox had ruled that Trump overstepped his authority in firing Commissioners Mary Boyle, Alexander Hoehn-Saric and Richard Trumka Jr.
The Supreme Court in a brief unsigned order indicated that the Trump administration was likely to show that the president is authorized by the U.S. Constitution to remove Consumer Product Safety Commission members. It was the latest in a series of legal victories for Trump in which the Supreme Court halted lower court rulings that had blocked his actions.
The court has a 6-3 conservative majority. Its three liberal members dissented on Wednesday.
Justice Elena Kagan, joined by fellow liberal Justices Sonia Sotomayor and Ketanji Brown Jackson, wrote that the court had again used its “emergency docket to destroy the independence of an independent agency, as established by Congress.”