Non-profits designated 501(c)(3) by the IRS abuse their status by conducting partisan practices.
From the IRS:
Under the Internal Revenue Code, all section 501(c)(3) organizations are absolutely prohibited from directly or indirectly participating in, or intervening in, any political campaign on behalf of (or in opposition to) any candidate for elective public office. Contributions to political campaign funds or public statements of position (verbal or written) made on behalf of the organization in favor of or in opposition to any candidate for public office clearly violate the prohibition against political campaign activity. Violating this prohibition may result in denial or revocation of tax-exempt status and the imposition of certain excise taxes.
Further info at Think Progress
“Treasury And IRS To Crack Down On Super PACs Masquerading As Tax-Exempt Social Welfare Groups”
CREDIT: Rchuon24/Creative Commons
The U.S. Department of the Treasury and the Internal Revenue Service issued proposed guidelines on Tuesday that could force dark-money political groups like Crossroads GPS and the American Future Fund to spend less of their money on campaign advertising and other overt electioneering. If implemented, this guidance would clarify what actions by tax-exempt social welfare organizations are limited “candidate-related political activity” and what actions can count toward their principal purpose.