550 U.S. 544 (2007) Cited 266,625 times 365 Legal Analyses
Holding that a complaint's allegations should "contain sufficient factual matter, accepted as true, to 'state a claim to relief that is plausible on its face' "
Holding allegations made out a claim against supervisor because allegations that supervisor "failed to train and supervise the officers to avoid the use of excessive force, failed to investigate the allegations of excessive force properly, and attempted to cover-up the unconstitutional conduct of his subordinates" showed that he "at least knowingly acquiesced in the unconstitutional conduct"
Holding that what a defendant, or its employees acting in the scope of their employment, must do, or must not do, "is a question of the standard of conduct required to satisfy the duty"
Holding that a plaintiff must prove it was more probable than not that medical negligence was the cause of her injuries, but “[t]his is not to say that a plaintiff could not recover for an aggravation of his physical condition if he proves by a balance of probabilities that the negligent act or omission caused the harm when there was a better than even chance of recovering to begin with.”
Evaluating proximate cause based on these two factors and whether the harm could have been reasonably foreseen are considered in evaluating proximate cause
Holding that the Contracts Clause is "a structural limitation placed upon the power of the States," so "an alleged Contracts Clause violation cannot give rise to a cause of action under § 1983"