CHAPTER III DEFINITIONS--CATEGORIES OF LEGISLATIVE JURISDICTION Exclusive legislative jurisdiction.--The term "exclusive legislative jurisdiction" as used in this report refers to the power "to exercise exclusive legislation" granted to the Congress by article I, section 8, clause 17, of the Constitution, and to the like power which may be acquired by the United States through cession by a State, or by a reservation made by the United States through cession by a State, or by a reservation made by the United States in connection with the admission of a State into the Union. In the exercise of such power as to an area in a State the Federal Government theoretically displaces the State in which the area is contained of all its sovereign authority, executive and judicial as well as legislative. By State and Federal statutes and judicial decisions, however, it is accepted that a reservation by a State of only the right to serve criminal and civil process in an area, resulting from activities which occurred off the area, is not inconsistent with exclusive legislative jurisdiction. The existence of Federal retrocession statutes has had the effect of eliminating any possibility of the possession by the Federal Government at this time of full exclusive legislative jurisdiction, since all States may exercise jurisdiction in consonance with such statutes notwithstanding that they cede exclusive legislative jurisdiction. However, in view of a widespread use of the term "exclusive legislative jurisdiction" in this manner, the Committee for purposes of the instant study has applied the term to the situation wherein the Federal Government possess, by whichever method acquired, all the authority of the State, and in which the State concerned has not reserved to itself the right exercise any authority concurrently with the United States except the right to serve civil or criminal process in the area. Because reservations made by the States in granting jurisdiction to the Federal Government have varied so greatly, and in order to describe situations in which the government has received or accepted no legislative jurisdiction over property which it owns, the Committee has found it desirable to adopt three other terms which are in general use in reference to jurisdictional status, and in an effort at precision has defined these terms. While these definitions are based on judicial decisions and similar authorities, and on usage in Government agencies, it is desired to emphasize that they are made here only for the purposes (13) 14 of this study, and that they are not purported as absolute criteria for interpreting legislation or judicial decisions, or for other purposes. By way of example the Assimilative Crimes Act, referred to at several points in this report, which by its terms is applicable to areas under exclusive or concurrent jurisdiction, in the usual case is applicable in areas here defined as under partial jurisdiction. Concurrent legislative jurisdiction.--This term is applied in those instances wherein in granting to the United States authority which would otherwise amount to exclusive legislative jurisdiction over areas the State concerned has reserved to itself the right to exercise, concurrently with the United States, all of the same authority. Partial legislative jurisdiction.--This term is applied in those instances wherein the Federal Government has been granted for exercise by it over an area in a State certain of the State's authority, but when the State concerned has reserved to itself the right to exercise, by itself or concurrently with United States, other authority constituting more than merely the right to serve civil or criminal process in the area (e.g., the right to tax private property). Proprietorial interest only.--This term is applied to those instances wherein the Federal Government has acquired some right or title to an area in a State but has not obtained any measure of the State's authority over the area. In applying this definition recognition should be given to the fact that the United States, by virtue of its functions and authority under various provisions of the Constitution, has many powers and immunities not possessed by ordinary landholders with respect to areas in which it acquires an interest, and of the further fact that all its properties and functions are held or performed in a governmental rather than a proprietary capacity.