Walden v. Fiore is a law-enforcement-related civil case decided yesterday by the U.S. Supreme Court.

Does a police officer conducting a seizure in one state subject himself to civil suit in another state (in this case, on the other side of the country) merely because the seizure will have a foreseeable effect in that other state due to the property owner's residence there?  No, said the Supreme Court unanimously.  Assertion of jurisdiction on such a tenuous basis denies the sued officer due process of law.