[JURIST] The US Supreme Court [official website; JURIST news archive] on Monday granted certiorari [order list, PDF] in four cases. In PPL Montana v. Montana [docket; cert. petition, PDF] the court will determine if the proper constitutional test for whether a river is navigable for title purposes requires a trial court to consider whether the river was considered navigable at the time the state joined the Union or whether the court can consider new evidence based on current use. The…