26 U.S.C. § 4912 — Tax on disqualifying lobbying expenditures of certain organizations

If an organization to which this section applies is not described in section 501(c)(3) for any taxable year^* by reason of making lobbying expenditures, there is hereby imposed a tax on the lobbying expenditures of such organization for such taxable year equal to 5 percent of the amount of such expenditures. The tax imposed by this subsection shall be paid by the organization.

If tax is imposed under subsection (a) on the lobbying expenditures of any organization, there is hereby imposed on the agreement of any organization manager to the making of any such expenditures, knowing that such expenditures are likely to result in the organization not being described in section 501(c)(3), a tax equal to 5 percent of the amount of such expenditures, unless such agreement is not willful and is due to reasonable cause. The tax imposed by this subsection shall be paid by any manager who agreed to the making of the expenditures.