The tea party "grouped" as a stand-alone entity receives almost all it's funding from AFP, which is owned by the Koch brothers. It's one degree of separation that you can find the proof on 1000 different websites. It's pretty straight forward information that yes, the liberal sites state it clearly, and the right-wing sites just don't print it and ignore it, as they all benefit from the Koch brothers political efforts.
The movie about the koch brothers- In an interview, the producer of the movie talks about how teams of very high-powered lawyers did everything in their power to try to stop the movie from being made. He had to hire 5 different teams of fact-checkers to check each others facts and make sure not one item in the movie had even the most remote possibility of being challenged as inaccurate, false, or even exaggerated.
To date, there has not been a single filing whatsoever in court about anything in that movie.
I can't think of a better source than that. The movie explains everything and also takes painful steps to show the proof of it's claims.
Here's a short video of Rachel Maddow explaining in simple terms the relationship between Koch and the AFP >> tea party.
http://maddowblog.msnbc.com/_news/2010/ ... eally?lite
Here's the wiki pages and excerpts for the tea party and AFP
Tea Party:
http://en.wikipedia.org/wiki/Tea_Party_ ... ganization
Influence of Koch Industries
Main article: Political activities of the Koch family
In an August 30, 2010, article in The New Yorker, Jane Mayer said that the billionaire brothers David H. Koch and Charles G. Koch and Koch Industries are providing financial and organizational support to the Tea Party movement through Americans for Prosperity, which David founded.[203][204] The AFP's "Hot Air Tour" was organized to fight against taxes on carbon use and the activation of a cap and trade program.[205] In 1984, David Koch also founded Citizens for a Sound Economy,[206] part of which became FreedomWorks in a 2004 split,[undue weight? – discuss] another group that organized and supports the movement.[207] Koch Industries issued a press release stating that the Kochs have "no ties to and have never given money to FreedomWorks".[208] Former ambassador Christopher Meyer writes in the Daily Mail that the Tea Party movement is a mix of "grassroots populism, professional conservative politics, and big money", the last supplied in part by Charles and David Koch.[209] Jane Mayer says that the Koch brothers' political involvement with the Tea Party has been so secretive that she labels it "covert".[210][dubious – discuss]
AFP:
http://en.wikipedia.org/wiki/Americans_for_ProsperityAFP was founded in 2004 when Citizens for a Sound Economy (CSE) split into FreedomWorks (formerly Citizens for a Sound Economy) and the Americans for Prosperity Foundation (formerly the Citizens for a Sound Economy Foundation). Dick Armey, who had become chair of CSE in 2003 after retiring from Congress,[5] remained chairman of FreedomWorks, while David H. Koch remained chairman of the AFP Foundation. Like CSE, AFP was founded with the support of David H. Koch and Charles G. Koch, both of Koch Industries.[6][7][8]