Article III standing requires a plaintiff to demonstrate injury in fact, causation, and redressability to invoke federal court jurisdiction.
Standing and Justiciability
A plaintiff must allege a concrete, particularised injury-in-fact even when suing for statutory violations; a bare procedural violation without real-world harm is insufficient for Article III standing.
Chevron U.S.A. v NRDC overruled; courts must independently interpret statutes and may not defer to agency interpretations solely because of statutory ambiguity.
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