Opinion summary
Etalia.ai summary of the majority opinion
The case addressed whether Washington State's regulations on oil tankers were preempted by federal law. INTERTANKO, representing international tanker owners, challenged the state's rules requiring specific safety measures and crew training for vessels operating in its waters. The Supreme Court held that certain state regulations were indeed preempted by federal statutes governing maritime operations and vessel standards. Specifically, it found that the Oil Pollution Act of 1990 (OPA) and other related federal laws established a comprehensive framework intended to ensure uniformity in regulating marine environmental protection and navigation safety across U.S. waters. Consequently, states could not impose additional requirements conflicting with or supplementing these federally mandated standards without explicit congressional authorization.
Opinion written by Justice Kennedy
Decided 6 Mar 2000 · Official report