501(c)(4)

501(c)(4) [r]: In U.S. tax law, an organization that has been determined to be nonprofit, but may be political; contributions to it are not tax-deductible; it can engage in research and education, affect specific policy or legislation, but not directly contribute to candidates or campaign for or against them. Their ability to campaign, not coordinated with the candidate, may have been expanded by Citizens United v. Federal Election Commission ^[e]

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