Summary

Portrait of William O. Douglas William O. Douglas United States v. Harriss — Dissent

It would seem to include not only pending or proposed legislation but any matter within the legitimate domain of Congress.
What contributions might be used 'principally to aid' in influencing 'directly or indirectly, the passage or defeat' of any such measure by Congress? When is one retained for the purpose of influencing the 'passage or defeat of any legislation'?
(1) One who addresses a trade union for repeal of a labor law certainly hopes to influence legislation.
Source: Wikisource

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