A bill to amend the Internal Revenue Code of 1954, with respect to lobbying by certain types of exempt organizations.

Provides that a charitable organization shall be denied exemption from taxation under the Internal Revenue Code where amounts paid or incurred by such organization during each taxable year to influence legislation exceed specified sums of money, or where a significant portion of the activities of such organization consists of carrying on propaganda or otherwise attempting to influence legislation.

Designates charitable organizations to which this Act applies, and defines the term "influencing legislation".

Disallows deductions to charitable organizations where the contribution is made for the purpose of influencing legislation.

Prohibits participation in a political campaign by any tax-exempt civic league. (Amends 26 U.S.C. 501 (f))