2 U.S.C. § 441b : US Code - Section 441B: Contributions or expenditures by national banks, corporations, or labor organizations

    (a) In general
      It is unlawful for any national bank, or any corporation
    organized by authority of any law of Congress, to make a
    contribution or expenditure in connection with any election to any
    political office, or in connection with any primary election or
    political convention or caucus held to select candidates for any
    political office, or for any corporation whatever, or any labor
    organization, to make a contribution or expenditure in connection
    with any election at which presidential and vice presidential
    electors or a Senator or Representative in, or a Delegate or
    Resident Commissioner to, Congress are to be voted for, or in
    connection with any primary election or political convention or
    caucus held to select candidates for any of the foregoing offices,
    or for any candidate, political committee, or other person
    knowingly to accept or receive any contribution prohibited by this
    section, or any officer or any director of any corporation or any
    national bank or any officer of any labor organization to consent
    to any contribution or expenditure by the corporation, national
    bank, or labor organization, as the case may be, prohibited by this
    section.
    (b) Definitions; particular activities prohibited or allowed
      (1) For the purposes of this section the term "labor
    organization" means any organization of any kind, or any agency or
    employee representation committee or plan, in which employees
    participate and which exists for the purpose, in whole or in part,
    of dealing with employers concerning grievances, labor disputes,
    wages, rates of pay, hours of employment, or conditions of work.
      (2) For purposes of this section and section 79l(h) of title
    15,(!1) the term "contribution or expenditure" includes a
    contribution or expenditure, as those terms are defined in section
    431 of this title, and also includes any direct or indirect
    payment, distribution, loan, advance, deposit, or gift of money, or
    any services, or anything of value (except a loan of money by a
    national or State bank made in accordance with the applicable
    banking laws and regulations and in the ordinary course of
    business) to any candidate, campaign committee, or political party
    or organization, in connection with any election to any of the
    offices referred to in this section or for any applicable
    electioneering communication, but shall not include (A)
    communications by a corporation to its stockholders and executive
    or administrative personnel and their families or by a labor
    organization to its members and their families on any subject; (B)
    nonpartisan registration and get-out-the-vote campaigns by a
    corporation aimed at its stockholders and executive or
    administrative personnel and their families, or by a labor
    organization aimed at its members and their families; and (C) the
    establishment, administration, and solicitation of contributions to
    a separate segregated fund to be utilized for political purposes by
    a corporation, labor organization, membership organization,
    cooperative, or corporation without capital stock.

      (3) It shall be unlawful - 
        (A) for such a fund to make a contribution or expenditure by
      utilizing money or anything of value secured by physical force,
      job discrimination, financial reprisals, or the threat of force,
      job discrimination, or financial reprisal; or by dues, fees, or
      other moneys required as a condition of membership in a labor
      organization or as a condition of employment, or by moneys
      obtained in any commercial transaction;
        (B) for any person soliciting an employee for a contribution to
      such a fund to fail to inform such employee of the political
      purposes of such fund at the time of such solicitation; and
        (C) for any person soliciting an employee for a contribution to
      such a fund to fail to inform such employee, at the time of such
      solicitation, of his right to refuse to so contribute without any
      reprisal.

      (4)(A) Except as provided in subparagraphs (B), (C), and (D), it
    shall be unlawful - 
        (i) for a corporation, or a separate segregated fund
      established by a corporation, to solicit contributions to such a
      fund from any person other than its stockholders and their
      families and its executive or administrative personnel and their
      families, and
        (ii) for a labor organization, or a separate segregated fund
      established by a labor organization, to solicit contributions to
      such a fund from any person other than its members and their
      families.

      (B) It shall not be unlawful under this section for a
    corporation, a labor organization, or a separate segregated fund
    established by such corporation or such labor organization, to make
    2 written solicitations for contributions during the calendar year
    from any stockholder, executive or administrative personnel, or
    employee of a corporation or the families of such persons. A
    solicitation under this subparagraph may be made only by mail
    addressed to stockholders, executive or administrative personnel,
    or employees at their residence and shall be so designed that the
    corporation, labor organization, or separate segregated fund
    conducting such solicitation cannot determine who makes a
    contribution of $50 or less as a result of such solicitation and
    who does not make such a contribution.
      (C) This paragraph shall not prevent a membership organization,
    cooperative, or corporation without capital stock, or a separate
    segregated fund established by a membership organization,
    cooperative, or corporation without capital stock, from soliciting
    contributions to such a fund from members of such organization,
    cooperative, or corporation without capital stock.
      (D) This paragraph shall not prevent a trade association or a
    separate segregated fund established by a trade association from
    soliciting contributions from the stockholders and executive or
    administrative personnel of the member corporations of such trade
    association and the families of such stockholders or personnel to
    the extent that such solicitation of such stockholders and
    personnel, and their families, has been separately and specifically
    approved by the member corporation involved, and such member
    corporation does not approve any such solicitation by more than one
    such trade association in any calendar year.
      (5) Notwithstanding any other law, any method of soliciting
    voluntary contributions or of facilitating the making of voluntary
    contributions to a separate segregated fund established by a
    corporation, permitted by law to corporations with regard to
    stockholders and executive or administrative personnel, shall also
    be permitted to labor organizations with regard to their members.
      (6) Any corporation, including its subsidiaries, branches,
    divisions, and affiliates, that utilizes a method of soliciting
    voluntary contributions or facilitating the making of voluntary
    contributions, shall make available such method, on written request
    and at a cost sufficient only to reimburse the corporation for the
    expenses incurred thereby, to a labor organization representing any
    members working for such corporation, its subsidiaries, branches,
    divisions, and affiliates.
      (7) For purposes of this section, the term "executive or
    administrative personnel" means individuals employed by a
    corporation who are paid on a salary, rather than hourly, basis and
    who have policymaking, managerial, professional, or supervisory
    responsibilities.
    (c) Rules relating to electioneering communications
      (1) Applicable electioneering communication
        For purposes of this section, the term "applicable
      electioneering communication" means an electioneering
      communication (within the meaning of section 434(f)(3) of this
      title) which is made by any entity described in subsection (a) of
      this section or by any other person using funds donated by an
      entity described in subsection (a) of this section.
      (2) Exception
        Notwithstanding paragraph (1), the term "applicable
      electioneering communication" does not include a communication by
      a section 501(c)(4) organization or a political organization (as
      defined in section 527(e)(1) of title 26) made under section
      434(f)(2)(E) or (F) of this title if the communication is paid
      for exclusively by funds provided directly by individuals who are
      United States citizens or nationals or lawfully admitted for
      permanent residence (as defined in section 1101(a)(20) of title
      8). For purposes of the preceding sentence, the term "provided
      directly by individuals" does not include funds the source of
      which is an entity described in subsection (a) of this section.
      (3) Special operating rules
        (A) Definition under paragraph (1)
          An electioneering communication shall be treated as made by
        an entity described in subsection (a) of this section if an
        entity described in subsection (a) of this section directly or
        indirectly disburses any amount for any of the costs of the
        communication.
        (B) Exception under paragraph (2)
          A section 501(c)(4) organization that derives amounts from
        business activities or receives funds from any entity described
        in subsection (a) of this section shall be considered to have
        paid for any communication out of such amounts unless such
        organization paid for the communication out of a segregated
        account to which only individuals can contribute, as described
        in section 434(f)(2)(E) of this title.
      (4) Definitions and rules
        For purposes of this subsection - 
          (A) the term "section 501(c)(4) organization" means - 
            (i) an organization described in section 501(c)(4) of title
          26 and exempt from taxation under section 501(a) of such
          title; or
            (ii) an organization which has submitted an application to
          the Internal Revenue Service for determination of its status
          as an organization described in clause (i); and

          (B) a person shall be treated as having made a disbursement
        if the person has executed a contract to make the disbursement.
      (5) Coordination with title 26
        Nothing in this subsection shall be construed to authorize an
      organization exempt from taxation under section 501(a) of title
      26 to carry out any activity which is prohibited under such
      title.
      (6) Special rules for targeted communications
        (A) Exception does not apply
          Paragraph (2) shall not apply in the case of a targeted
        communication that is made by an organization described in such
        paragraph.
        (B) Targeted communication
          For purposes of subparagraph (A), the term "targeted
        communication" means an electioneering communication (as
        defined in section 434(f)(3) of this title) that is distributed
        from a television or radio broadcast station or provider of
        cable or satellite television service and, in the case of a
        communication which refers to a candidate for an office other
        than President or Vice President, is targeted to the relevant
        electorate.
        (C) Definition
          For purposes of this paragraph, a communication is "targeted
        to the relevant electorate" if it meets the requirements
        described in section 434(f)(3)(C) of this title.