The Short Version
The Supreme Court did strike down the administration's IEEPA-based tariffs on February 20, 2026, ruling the president lacked statutory authority. However, the claim's reference to a "15% global tariff program" is inaccurate. The 15% figure refers to a separate tariff the administration announced *after* the ruling under different legal authority (Section 122 of the Trade Act), which was not struck down. The claim conflates two distinct tariff actions, creating a misleading picture of what the Court actually invalidated.