The "Dirty Thirty" Pay No Taxes

These thirty corporations not only have vast profits- they don't pay taxes. Instead they have collected 68 billion dollars in refunds over the past couple of years.. How do they do this? Well, by buying powerful politicians to block tax changes, that's how. More at the link. http://www.huffingtonpost.com/2012/03/21/corporate-tax-dodgers-loopholes_n_1368420.html