Daves v. Dallas County, Texas

(1) Whether Younger v. Harris and its progeny require federal courts to abstain from adjudicating petitioners' constitutional challenges to respondents' pretrial detention of many thousands of presumptively innocent people; and (2) whether, under this court's precedent, legislation enacted during a lawsuit renders the asserted claims moot if the legislation does not provide the relief sought in the litigation, such that the courts could still provide the plaintiff with effectual relief.