(case involves longstanding harassment against defendant, rancher, by Bureau of Land Management (BLM); plaintiff sued defendant for trespass caused by presence of defendant's cattle on BLM land without federal permit; defendant claimed ownership of historic grazing preferences and property rights to stock water usage dating to 1860s; plaintiff starting denying renewal of grazing permits in 1993; court determined that defendant held procedural and substantive property interest in grazing permit for purposes of Due Process Clause that cannot be denied before defendant given due process; court also held that plaintiff's conduct of denying defendant grazing permits and water rights "shocked the conscience" in violation of the APA; court issued permanent injunction ordering plaintiff to grant defendant grazing permit renewal application).