Libertarians for a National Sales Tax?

My wife alerted me to this (unintentionally) humorous article on the possibility of replacing (heh) the IRS with a national sales tax. Notice that in order to be “fair” to the poor, people still need to report their income to the government. And check out this quote from a Cato guy: Despite the heavy opposition, even skeptics are loathe to underestimate the “Fair Tax” -- or some variation of it. After all, notes Chris Edwards, the director of tax policy studies at the Cato Institute, the libertarian think tank: “Social Security reform started off 20 years ago as a radical, loony idea.”