(a) Property covered. This part is applicable in connection with property vested in the Attorney General on and after December 18, 1941. It is not applicable in connection with property or interest in property so vested or acquired by the United States prior to December 18, 1941, which property or interest is governed by Treasury Decision 4168, approved June 21, 1928, as amended by Treasury Decision 4254, approved January 7, 1929, and Treasury Decision 4514, approved January 18, 1935 (26 CFR (1938 ed.) 452.1-452.10).

(b) Taxes covered. Except as otherwise provided by specific exemption applicable with respect to the Alien Property Custodian, this part applies in the circumstances therein indicated, to any internal revenue tax applicable in respect of (1) property vested in the Attorney General or any action or transaction incidental to such property, or (2) any person whose property is so vested or any action or transaction of such person, whether the tax is applicable in respect of the period of vesting or any other period. Federal employment taxes are applicable with respect to wages paid to a person not a regular Government employee, permanent or temporary, for services immediately connected with the operation of an enterprise under control of the Attorney General such as might be rendered to a private operator.