The Ninth Circuit affirmed a lower court’s decision to dismiss environmental groups’ action against the National Park Service (NPS) on the grounds that NPS did not act arbitrarily and capriciously…

The court dismisses an environmental group's claims that the National Park Service (NPS) failed to comply with certain statutory mandates, deadlines, and management policies involving…

The U.S. Supreme Court holds that an association's claim that a National Park Service (NPS) regulation that purports to render the Contract Disputes Act (CDA) inapplicable to concession…

The court reverses and remands a lower court decision holding that a portion of the National Park Service's (NPS') backcountry management plan (BMP) for the Canyonlands National Park in…

The court affirms a district court grant of summary judgment to the National Park Service on the grounds that the Park Service's deer management program in Gettysburg National Military Park…

The court holds that the district court, in applying the rule of reason, did not abuse its discretion in dissolving an injunction when it held that the environmental impact statements (EISs)…