
The conservative-majority US Supreme Court struck down 40 years of legal precedent Friday, curbing the power of federal agencies to regulate critical issues affecting Americans' daily lives, from air quality to drug safety and more.
In a 6-3 vote, judges overruled the landmark 1984 ruling in Chevron v Natural Resources Defense Council, which said judges should defer to government experts in determining a "reasonable" interpretation of the law if the language is ambiguous.