Early developments The first federal enclaves were created by the same clause of the Constitution that created the
District of Columbia. That clause provides for the United States to exercise "exclusive Legislation" over the new Seat of Government and "like authority" over: Because of the Enclave Clause, whenever a state government consented to the purchase of property by the
federal government for a needful building, the U.S. obtained exclusive legislative
jurisdiction over that parcel of property. In 1841, the
Congress enacted a general law requiring state consent for all federal building projects. Moreover, the U.S. Attorneys General ruled that, in consenting to purchase, the states could reserve no jurisdiction except for the service of criminal and civil processes.
1885: Cession and reservation as alternatives In 1885, the
Supreme Court ruled that there were two additional ways in which the U.S. could acquire federal enclaves: (1) the states could "cede" legislative jurisdiction to the United States and/or (2) the United States could "reserve" legislative jurisdiction at the time of statehood. The Supreme Court added that these "cessions" and "reservations" were not limited to Enclave Clause ("needful building") purposes. Because
state laws did not apply to federal enclaves, Congress provided a few basic criminal laws in the Federal Crimes Act of 1790, later adopting a series of
Assimilative Crimes Acts and "federalizing" each state's crimes by making them prosecutable in federal courts. The Assimilative Crimes Act only applies to federal properties where the federal government has obtained exclusive or concurrent jurisdiction; federal property under a proprietorial interest only cannot assimilate state laws and enforce them as federal laws.
International law rule Congress provided no
civil laws to govern these enclaves. Thus, in 1885, the Supreme Court held that the "
international law rule" applied. That rule states that when a territory is transferred from one government to another (such as when a federal enclave is ceded), laws for the protection of private rights continue in force until abrogated or changed by the new government. Under the
doctrine of extraterritoriality, a federal enclave was treated as a "state within a state" until 1953; therefore, enclave residents were not residents of the overarching state. As a result, they could not vote in state elections, attend public schools, obtain a divorce in state courts, or call upon state law enforcement officers to protect them from criminals.
After 1900: Congress begins to authorize state laws In the 20th century, Congress gradually authorized the enforcement of some state laws on federal enclaves. In 1928, Congress made some state laws, governing wrongful death and personal injuries, applicable to federal enclaves. In the late 1930s, Congress authorized states to apply their state taxes on fuel, income, sales and use (the Buck Act), and state laws governing worker's compensation and unemployment insurance.
1937: Supreme Court allows states to reserve jurisdiction In 1937, because of concern over the lack of state law on federal enclaves, the Supreme Court held that states could reserve some jurisdiction to themselves in consenting to federal legislative jurisdiction. In response, the states began to amend their "consent" and "cession" statutes to reserve state jurisdiction, including the power to tax enclave residents. To distinguish earlier "exclusive" jurisdiction enclaves from those acquired after the state amendments, the newer enclaves were labeled "partial" jurisdiction—the specific label "concurrent" was given to enclaves over which the state had full jurisdiction. Finally, non-enclave federal property was called "proprietorial interest only."
February 1, 1940: cessation of jurisdiction Effective February 1, 1940, Congress repealed the 1841 statute requiring state consent to federal purchases; it instead said that the acquisition of federal property after that date would no longer result in the transfer of jurisdiction to the U.S. federal government unless the head of the federal agency in charge of the property filed a notice with the state governor accepting whatever jurisdiction was offered by the state. However, during
World War II, the United States acquired many new military installations, during which the
Secretary of War sent numerous letters to state governors accepting whatever jurisdiction the state offered, often without describing the location or boundaries of these military installations.
Post-WWII: Courts apply state laws without retrocession After World War II, states began to apply state laws to enclave residents without waiting for Congress to act. Thus, in 1952, a California court gave enclave residents the right to vote in state elections, rejecting the "extraterritoriality" doctrine, and holding that enclave residents were residents of the state. In 1970, the Supreme Court agreed in
Evans v. Cornman, holding that all enclave residents had a right to vote in state elections. In 1950, without addressing the jurisdictional issue directly, Congress passed legislation providing federal financial aid to schools in localities impacted by federal facilities. Six years later, in 1956, the government reported that because of this federal aid, "not a single child is being denied the right to a public school education because of his residence on a federal enclave". Earlier, courts in
Kansas,
Georgia, and
New Mexico held they had no jurisdiction to grant divorces to residents of federal enclaves. After each state amended its divorce statutes to permit such divorces, however, court decisions in each state have upheld the validity of these statutes. Today, every state treats enclave residents as residents of the state for purposes of divorce proceedings.
1953: Abolishment of the extraterritoriality doctrine The
extraterritoriality doctrine was abolished by the Supreme Court in 1953 in
Howard v. Commissioners. The city of
Louisville, Kentucky, had annexed a federal enclave into its city limits, thereby allowing the collection of city taxes from enclave residents under the Buck Act. Additionally, federal government reports in 1956 and 1957 concluded that the states should have full
concurrent jurisdiction on all federal enclaves. In 1969, the
Public Land Law Review Commission published a report on developments since the 1956 and 1957 reports, observing that those reports had been successful in changing federal agency policy and limiting further acquisition of federal enclaves. The 1969 report
1970: "Friction Not Fiction" reiterated In 1970, a year after the 1969 report, the Supreme Court in
Evans v. Cornman unanimously held that enclave residents have a right to vote in state elections. In reaching this result,
Evans reiterated the "friction not fiction" doctrine of
Howard v. Commissioners, and reaffirmed that enclave residents should be regarded as residents of the state. The court relied in part on the fact that Congress had authorized the states to enforce many state laws on federal enclaves. Under
Evans, Congress has the power, if it chooses, to authorize the enforcement of all state laws on federal enclaves; it need not "retrocede" or "relinquish" federal jurisdiction. Instead, it can simply "permit" all state laws to apply to all federal property regardless of "federal enclave" status. Some criminal laws have also been authorized by Congress to apply on federal enclaves, including "immigrant stations" and
Job Corps Centers. In addition, the states' power to enforce their tax laws on federal enclaves necessarily includes the power to prosecute enclave residents criminally for violating those laws. In addition, the "friction not fiction" doctrine indicates that the courts can approve the application of state laws to federal enclaves to the same extent that they apply to the other 97% of federal lands (i.e., subject only to the limitations of the
Supremacy Clause). With regard to the states' ability unilaterally to apply their laws on federal enclaves,
Evans noted that enclave residents: ==Current legal status==