Pub. L. 86-682, tit. 39, pt. IV, ch. 57, sec. 4166
Lending or permitting use of frank unlawful
§ 4166. Lending or permitting use of frank unlawful A person entitled to use a frank may not lend it or permit its use by any committee, organization, or association, or permit its use by any person for the benefit or use of any committee, organization, or association. This section does not apply to any committee composed of Members of Congress.