Measured by what?
The tax cuts were 12 years ago.
A few years later we had unemployment under 5 percent, deficits dropping steadily, and constant-dollar revenues coming in higher than the maximum of the Clinton years with the Clinton rates. The stock market cracked 14,000. This was after an attack on the U.S. and the resulting economic hit and military buildup.
We hit the skids in 2008 because of a sub-prime mortgage breakdown that had nothing at all to do with tax rates. Nothing.
None of this is new information. It just doesn't seem to stick.