501(c) organization - Wikipedia
https://en.wikipedia.org/wiki/501(c)_organization
501(c)(3) organization - Wikipedia
https://en.wikipedia.org/wiki/501(c)(3)_organization
An Encore for the Center to Protect Patient Rights - OpenSecrets News
https://www.opensecrets.org/news/2014/03/an-encore-for-the-center-to-protect-patient-rightstect-patient-right/
1958 NAACP v Alabama2010 Citizens United v FEC2011 Van Hollen v FEC501(c)(4) nonprofits501(c)(6) organizationsAmerican CommitmentAmerican EncoreAmericans for Job SecurityAmericans for Prosperity (AFP)Center for Individual Freedom (CFIF, CIF)Charles and David KochCrossroads GPSFreedom Partners (FP)Sean Noble
IRS Delays New Rules for Dark Money Groups — ProPublica
https://www.propublica.org/article/irs-pushes-back-new-rules-for-dark-money-groups
IRS chief promises stricter rules for 'dark money' nonprofit groups – Center for Public Integrity
https://publicintegrity.org/federal-politics/irs-chief-promises-stricter-rules-for-dark-money-nonprofit-groups/
Tax Filings Hint at Extent of Koch Brothers’ Reach - The New York Times
https://www.nytimes.com/2013/09/13/us/politics/tax-filings-hint-at-extent-of-koch-brothers-reach.html
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501(c)(4) nonprofits
501(c) organizationsMoney, government and politics in the United StatesUnited States businesses and organizations
Names and synonyms
- 501(c)(4) nonprofits
- Social welfare nonprofits