political action committee have soared since 2006 to more than $4 million, more than 80% going to republicans. david koch also helped create americans for prosperity, a major backer of tea party events across the country. >> who decides wisconsin's futures? >> reporter: taking sides with scott walker who received $43,000 from koch industries in his 2010 race for governor. and the kochs are busy when it comes to state politics. they have also given $22,000 to john kasik. they rarely do interviews. they did not return our request for comments on this story. still, the koch brothers have their defenders saying they do donate money to a variety of causes and give a portion of their contributions to democrats. >> interesting look, thanks so much, jim. >> you bet. ahead on this "american