Bruno, I ran the numbers back in 2008. I think I came up with a 10% increase in revenue back then. It's somewhere in the election archives I think. The basic jist of it is that half the people in the US don't pay taxes now. This would serve to put them on the tax rolls, everytime they buy a MCD burger or a DVD or a pair of Nike's, they'd add revenue to pay for the social services they use. Rich people who spend alot more, would pay alot more. I just 'borrowed' Forbes notes though.