4 U.S. Code § 118. Limitations

Sections 116 through 126 of this title do not—
provide authority to a taxing jurisdiction to impose a tax, charge, or fee that the laws of such jurisdiction do not authorize such jurisdiction to impose; or
modify, impair, supersede, or authorize the modification, impairment, or supersession of the law of any taxing jurisdiction pertaining to taxation except as expressly provided in sections 116 through 126 of this title.
Effective Date; Application of Amendment

Section effective July 28, 2000, and applicable only to customer bills issued after the first day of the first month beginning more than 2 years after July 28, 2000, see section 3 of Pub. L. 106–252, set out as a note under section 116 of this title.