A coalition of 18 states, led by New York and California, has filed a federal lawsuit challenging President Trump’s latest round of tariffs, accusing the administration of bypassing Congress and violating the Constitution. The legal action threatens to delay or derail the policy, increasing uncertainty in global trade and financial markets.
- 18 states, led by New York and California, sued to block Trump's new tariffs on steel, aluminum, and semiconductors
- Tariffs include 25% on steel and aluminum, 15% on semiconductors, effective March 15, 2026
- ^VIX rose 12.3% to 21.4 on lawsuit announcement, indicating market volatility
- CL=F crude oil rose 2.8% to $78.60/bbl amid trade disruption fears
- AAPL shares declined 1.6% on supply chain and cost concerns
- Legal challenge hinges on constitutional overreach and bypassing congressional authority
A coalition of 18 U.S. states, including New York, California, Illinois, and Washington, has launched a federal lawsuit to halt President Donald Trump’s newly implemented tariffs on imported steel, aluminum, and semiconductors, asserting they exceed executive authority and circumvent congressional oversight. The states argue the tariffs represent an unconstitutional end-run around the legislative process, echoing legal challenges that previously blocked earlier trade measures. The lawsuit, filed in the U.S. District Court for the Southern District of New York, demands a preliminary injunction to halt implementation of the tariffs, which are set to take effect on March 15, 2026. The new tariffs impose rates of 25% on steel and aluminum imports and 15% on certain semiconductor components from countries including China, Mexico, and Germany. These measures follow an emergency declaration issued under Section 301 of the Trade Act of 1974, which the states claim was improperly invoked to bypass statutory requirements. Legal experts note that the courts have previously ruled on similar grounds in 2023, when a federal judge invalidated a prior set of Trump-era tariffs for lack of proper justification. The financial markets responded swiftly to the news, with the CBOE Volatility Index (^VIX) rising 12.3% to 21.4 by midday on March 5, signaling heightened risk aversion. Energy futures reflected the uncertainty, with crude oil (CL=F) trading at $78.60 per barrel, up 2.8% as traders priced in potential supply chain disruptions. In the tech sector, Apple (AAPL) shares dipped 1.6% after analysts warned of higher input costs and possible delays in chip supply chains, particularly for the upcoming iPhone 18 launch. The legal challenge could force a policy pause or reversal, especially if a court rules in favor of the states. The outcome may also influence international trade relations, particularly with key allies in the EU and Asia, whose exports are directly impacted. The Department of Commerce has not yet issued a formal response to the lawsuit.