Here’s a great quote from Mark Steyn on how many Americans pay no taxes at all:

And yet for an increasing number of Americans, tax season is like baseball season: It’s a spectator sport. According to the Tax Policy Center, for the year 2009, 47 percent of U.S. households will pay no federal income tax. Obviously, many of them pay other kinds of taxes — state tax, property tax, cigarette tax. But at a time of massive increases in federal spending, half the country is effectively making no contribution to it, whether it’s national defense or vital stimulus funding to pump monkeys in North Carolina full of cocaine (true, seriously, but don’t ask me why). Half a decade back, it was just under 40 percent who paid no federal income tax; now it’s just under 50 percent. By 2012, America could be holding the first federal election in which a majority of the population will be able to vote themselves more government lollipops paid for by the ever shrinking minority of the population still dumb enough to be net contributors to the federal treasury. In less than a quarter-millennium, the American Revolution will have evolved from ‘No taxation without representation’ to representation without taxation. We have bigger government, bigger bureaucracy, bigger spending, bigger deficits, and bigger debt, and yet an ever smaller proportion of citizens paying for it.