But from here, the money for political influence gets a little more shady. From 2001 to 2010, the Koch brothers invested $1.5 million in other political groups, called 527 organizations, compared to Soros’ whopping $32.5 million.
The proliferation and expanded influence of 527s was made possible by the problematic McCain-Feingold Campaign Finance Reform of 2002, so named because of the tax code, Section 527, that they fall under. As described by Benjamin Dangl, the groups “operate as shadow political campaigns working indirectly for or against a particular candidate.” Once contributed funds get to these groups, they can go anywhere; and the audit trail is virtually non-existent. Some are run totally above board and are very straightforward in their objectives. Many others are not. As Dangl says, “Prominent think tanks and campaign finance reform lobbyists say 527s are ‘illegal loopholes’ that enable the privatization of political campaigns.”
http://www.westernjournalism.com/koch-brothers-george-soros-fear/