Somebody tell Congress.
This might explain why they come out as millionaires.
UPDATE: I think this needs more amplification (here’s the second paragraph):
Abstract: A 2004 study of the results of stock trading by United States Senators during the 1990s found that that Senators on average beat the market by 12% a year. In sharp contrast, U.S. households on average underperformed the market by 1.4% a year and even corporate insiders on average beat the market by only about 6% a year during that period. A reasonable inference is that some Senators had access to – and were using – material nonpublic information about the companies in whose stock they trade.