On March 22, 2016, the Supreme Court decided Sturgeon v. Frost. Sturgeon challenged a National Park Service (NPS) ban on the operation of hovercraft on the National River, part of which falls within the Yukon-Charley River National Preserve. The State of Alaska then intervened, challenging NPS’s authority to require its researchers to obtain a permit before engaging in studies of chum and sockeye salmon on the Alagnak River, part of which falls within the boundaries of the Katmai National Park a...
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