528 U.S. 167 (2000)
Friends of the Earth, Inc. v.
Did Friends of the Earth and other environmental groups have standing to bring the lawsuit against Laidlaw Environmental Services despite Laidlaw's compliance achieved before the court's resolution?
The legal principle in question pertains to Article III of the U.S. Constitution, which requires a 'case or controversy' for federal courts to have jurisdiction. The standing doctrine, derived from this requirement, necessitates that a plaintiff demonstrate (1) an injury in fact, (2) causation, and (3) redressability. In the environmental law context, plaintiffs must show that they suffer or will imminently suffer a concrete and particularized injury.
The Supreme Court held that Friends of the Earth had standing to sue. It determined that an injury in fact had been demonstrated by showing that members of the plaintiff organizations refrained from using the North Tyger River due to the defendant's continued permit violations and the resulting environmental harm, thus meeting the standing requirement.
This case is crucial for law students studying environmental law and civil procedure because it expands the understanding of standing in environmental cases. Friends of the Earth established that fear of harm or refraining from enjoyment of an environment can qualify as injury, pressing home the fact that the environmental harm itself, not the regulatory status of the defendant at the time of judgment, is central to standing analysis. This case highlights citizen suit actions as a powerful tool in upholding environmental statutes when regulatory agencies fail to act.