Arizona becomes the First State to Eliminate Chevron Deference

On April 11, 2018, Arizona Governor Doug Ducey signed into law H.B. 2238, which amended the state’s administrative procedure laws to provide that courts are not required to defer to an agency’s legal interpretation in lawsuits over administrative decisions. The amendment effectively eliminated Chevron deference, which requires courts to defer to an agency’s reasonable interpretation of an ambiguous statute.

The legal doctrine—named for the 1984 Supreme Court decision in Chevron U.S.A. Inc. v. Natural Resource Defense Counsel, Inc., 467 U.S. 837, 842-844 (1984)—has been criticized by various judges, including U.S. Supreme Court Justice Neil Gorsuch (then sitting on the Tenth Circuit).  The U.S. Senate has also unsuccessfully attempted to repeal the doctrine.  Other Supreme Court Justices, as we reported here, are not inclined to disturb the well-established law.

The Arizona law is the first state law of its kind. Arizona lawmakers are hopeful that the law may serve as a model for other states or Congress.  If a similar bill is able to successfully pass through Congress and become law, it will have far reaching consequences for cases challenging agency decisions made pursuant to the Endangered Species Act.

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Nossaman’s Endangered Species Law & Policy blog focuses on news, events, and policies affecting endangered species issues in California and throughout the United States. Topics include listing and critical habitat decisions, conservation and recovery planning, inter-agency consultation, and related developments in law, policy, and science. We also inform readers about regulatory and legislative developments, as well as key court decisions.

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