The Supreme Court’s Citizens United decision in 2010 has contributed to an unprecedented influx of money into the election process, raising questions about donor disclosure and political activities by 501(c)(4) tax-exempt organizations. A highly politicized issue, Members of Congress and the public have begun to both call for, and question, increased scrutiny of 501(c)(4) organizations that appear to be engaged in partisan political activity. - See more at: https://www.independentsector.org/501c4_organizations#sthash.qOCZijq9.dpuf