Without it, the ability to challenge the application of regulations - like those of the EPA - in court is significantly increased.
For example - Chevron arose out a re-interpretation of the meaning of the word “source” in an EPA regulation on air pollution. It previously meant “any machine.”
Under Reagan the EPA re-interpreted source to mean “any plant” and not an individual machine. An environmental group sued to have the COURT determine the meaning of the word “source.” The D.C. Circuit ruled the re-interpretation by the EPA was invalid.
