USD Index Faces Key Test After Supreme Court Tariff Ruling

The US Dollar Index (DXY) enters a pivotal week as markets digest the implications of the Supreme Court's landmark tariff ruling, which has undermined a key pillar of dollar strength. The ruling, which struck down broad tariff authority, has forced a reassessment of the dollar's trajectory against major counterparts including EUR/USD, GBP/USD, and USD/JPY. The greenback had previously benefited from tariff-driven trade surplus expectations, and the reversal of that narrative is creating headwinds. Analysts are closely watching whether the dollar can maintain support at recent levels or if the post-ruling selloff has further to run. Key data releases this week, including consumer confidence and PCE inflation, will provide additional direction. Technical indicators show the DXY testing critical support zones, with EUR/USD and GBP/USD both probing resistance levels that could signal broader dollar weakness if breached. Traders should prepare for elevated volatility as the market recalibrates rate expectations and trade policy assumptions simultaneously.