Volatile U.S. tariff announcements continue to affect international supply chains for U.S. construction projects. Although recent litigation has centered on the scope of presidential tariff authority rather than construction‑specific disputes, these decisions carry important implications for how parties structure risk in their contracts. In May 2025, the U.S. Court of International Trade (CIT) struck down certain “Liberation Day” tariffs as exceeding presidential authority under IEEPA. A federal district court in Washington, D.C. likewise issued a preliminary injunction suspending related tariffs—though it later stayed its own order pending appeal. And the Supreme Court has agreed to review cases addressing the legal limits of IEEPA‑based tariffs.