Several academic studies show that the investment portfolios of congressmen and senators consistently outperform stock indices like the Dow and the S&P 500, as well as the portfolios of virtually all professional investors. Congressmen do better to an extent that is statistically significant, according to [a 2004] study . . . The trading is widespread...

If the law passes in its current form, insider trading by Congress will not become illegal. I predict such trading will increase because the rules of the game will be clearer.