Saying a Great Lakes invasion of Asian carp is not imminent, a federal appeals court has declined to revive a lawsuit seeking to force the Army Corps of Engineers to take more aggressive action against the fish’s advance toward Lake Michigan. The 7th U.S. Circuit Court of Appeals held that the five states that filed the suit could not make a case against the corps or the Metropolitan Water Reclamation District of Greater Chicago. The states failed to show that the corps and the district are operating the …