Editors' Summary: Environmental regulation has come under increasing attack from those who argue that governmental limitations on property use violate constitutional restrictions on regulatory takings of property. The author addresses this controversy by focusing on the background limitations on owners' rights that are inherent in property law itself, as opposed to the external controls that government may impose under the doctrines of police power and nuisance.

Is an intentional temporary deprivation of the use of land not a "temporary taking"? This proposition was asserted by a panel of the U.S. Court of Appeals for the Ninth Circuit in Tahoe-Sierra Preservation Council, Inc. v. Tahoe Regional Planning Agency. The Ninth Circuit denied en banc review, despite a strong dissent by Judge Alex Kozinski. Perhaps because it had never explicated the meaning of "temporary taking," and perhaps in part because its interest was kindled by the Kozinski dissent, the U.S. Supreme Court recently granted certiorari. The question is limited to:

The government use of compulsory purchase and land use control powers appears to be increasing worldwide as competition for useable and livable space increases. The need for large and relatively undeveloped space for agriculture and conservation purposes often competes with the need for shelter and the commercial and industrial development accompanying such development for employment, product production and distribution, and other largely urban uses.

Editors' Summary: Property rights advocates implicitly complained in Babbitt v. Sweet Home Chapter of Communities for a Great Oregon that a Fish and Wildlife Service regulation that aimed to protect endangered and threatened species by defining "harm" to include habitat modification impinged on their rights as private landowners by asking them to share with the government responsibility for protecting such species. The U.S. Supreme Court upheld the regulation as reasonable given the relevant language of the Endangered Species Act.