"Conservatives ought to face up squarely to the uncomfortable fact that there’s scant evidence that sharply reduced taxation since the Clinton era has helped middle-class Americans build wealth or improve their economic standing."
It's impossible to see the evidence of the benefits of tax cuts when the government is spending at absolutely insane levels. If spending were restrained - which will likely never happen in my lifetime (I'm 45) - then there would be plenty of evidence of the positive effects of tax cuts.
Shame on you for not noticing and explaining this, Mr. Medved. You should be embarrassed.