In the landmark case Chevron, U.S.A. v. National Resource Defense Council,
Inc., the Supreme Court articulated a deferential standard for reviewing an
agency's interpretations of statutory language within that agency's area o
f concern as long as Congress was silent or ambiguous on the matter and the
agency's interpretation was reasonable. Using the Food and Drug Administra
tion as a primary case study, Dr Shuren contends that one of the main reaso
ns for granting agencies broad judicial deference in the implementation of
statutory mandates is that agencies are the governmental entities best equi
pped to respond to changing circumstances. Dr Shuren contends that courts s
hould grant sufficient deference to agencies' modifications of prior statut
ory interpretations in order to ensure adequate agency flexibility to meet
new challenges within existing statutory delegations of authority.