… For decades, federal court battles have pitted environmentalists who want the Clean Water Act to protect more wetlands against industries seeking regulatory rollbacks. The high court’s May 25 decision favoring Idaho landowners Michael and Chantell Sackett curtailed powers of the Environmental Protection Agency and Army Corps of Engineers to limit wetlands destruction. It put states at the center of future fights over wetlands that defend against floods, purify water and support wildlife, analysts say.“The federal rollbacks are creating a vacuum. The states are going to have to step in and fill the void,” said Kim Delfino, president of an environmental consulting company and the former California director of Defenders of Wildlife.