US President Donald Trump has escalated his protectionist agenda by raising tariffs on US imports to 15% from 10%, defying a recent Supreme Court ruling. This move, allowable for up to 150 days, spares pharmaceuticals, USMCA goods, and items under investigation. Global markets brace for ripple effects as trade partners respond. Tariff Hike Background Trump announced the increase shortly after the US Supreme Court on February 20, 2026, struck down broader tariff plans, which h