The Tax Code and "Fairness"

At the Cato Institute, Alan Reynolds writes:

A favorite talking point among redistributionists is to say the tax code was much “fairer” under President Bill Clinton, than it has been since the Bush tax cuts of 2003.  New Congressional Budget Office (CBO) figures show that the top 1% paid 21.3% of all federal taxes from 1993 to 2000, when Clinton was president, but they paid 25.1% from 2003 to 2008, after the Bush tax cuts.   If 21.3% was a fair share in the Clinton years, then the top 1% has been paying much more than its fair share since 2003.