# Chevron Doctrine The Chevron Doctrine was a US administrative law principle from 1984 that required courts to defer to federal agencies' interpretations of ambiguous statutes. When Congress wrote vague laws, agencies could fill in the meaning through regulation, and courts would not override them as long as the interpretation was reasonable. This gave the executive branch wide room to expand its regulatory reach. In June 2024, the Supreme Court overruled Chevron in _Loper Bright Enterprises v. Raimondo_ (6-3), holding that courts must use their own judgment when interpreting statutes rather than deferring to agencies. The decision pressures Congress to write more precise legislation and opens existing regulations to new legal challenges. --- ## Entries XX