:The question presented is whether the Tax Injunction Act (TIA or Act), 28 U.S.C. § 1341[28 USCS § 1341], which prohibits a lower federal court from restraining "the assessment, levy or collection of any tax under State law," bars the suit. Plaintiffs-respondents do not contest their own tax liability. Nor do they seek to impede Arizona's receipt of tax revenues. Their suit, we hold, is not the kind § 1341 proscribes. | :The question presented is whether the Tax Injunction Act (TIA or Act), 28 U.S.C. § 1341[28 USCS § 1341], which prohibits a lower federal court from restraining "the assessment, levy or collection of any tax under State law," bars the suit. Plaintiffs-respondents do not contest their own tax liability. Nor do they seek to impede Arizona's receipt of tax revenues. Their suit, we hold, is not the kind § 1341 proscribes. |