•The US Supreme Court rejected Trump's claim of unbridled power to impose and remove tariffs, setting new limits on presidential authority.
•The 6-3 ruling, with three Republican appointees in the majority, emphasized constitutional boundaries and faulted Trump for seeking a "transformative expansion" of power.
•This decision signals the justices will not be a "rubber stamp" for Trump's actions, despite largely accommodating his administration in the past year.
•Chief Justice John Roberts highlighted that the Constitution grants taxing power to Congress, not the executive branch, broadening the clash over the 1977 emergency-powers law.
•The ruling also invoked the major questions doctrine, requiring clear congressional authorization for far-reaching executive actions, applying it to Trump's tariffs.
