WASHINGTON, D.C.â(ENEWSPF)âOctober 13, 2010. Assistant Senate Majority Leader Dick Durbin (D-IL) urged the Internal Revenue Service (IRS) to quickly investigate the tax status of Crossroads GPS and other organizations that are directing millions of dollars into political advertising without disclosing their funding sources. U.S. tax law requires that the primary purpose of 501(c)(4) organizations, like Crossroads GPS, cannot be political, including the âparticipation or intervention in political campaigns.â






