63 S.Ct. 573, 574-75, 87 L.Ed. 838 (1943). Of course in the absence of federal regulation, even when federal property issues are involved, courts incorporate local law as the federal rule, unless there is a clear need for a federal common law rule arising from factors such as a need for uniformity. United States v. Kimbell Foods, Inc., 440 U.S. 715, 728, 99 S.Ct. 1448, 1458, 59 L.Ed.2d 711 (1979). But where there is no doubt that a “regulatory scheme, complete as it is in every detail, was intended to provide the whole and exclusive source of protection of the [relevant] interests,” United States v. Shimer, 367 U.S. 374, 381, 81 S.Ct. 1554, 1559, 6 L.Ed.2d 908 (1961), the regulatory scheme controls. See also Free v. Bland, 369 U.S. 663, 668, 82 S.Ct. 1089, 1093, 8 L.Ed.2d 180 (1962) (<HOLDING>). By contrast, a regulation that does not
holding that state law must give way to treasury department regulations governing survivorship rights in us bonds holding that because federal regulations have the force of law they may create enforceable rights under  1983 holding that where department of transportation regulations did not require department officials to enforce vehicle regulations the departments decision not to do so was discretionary holding federal regulations have the force of law and may create enforceable rights holding that when the state moves to destroy  familial bonds it must provide parents with fundamentally fair procedures