Is there a methodology for determining where that optimal point is?
The way I like is to have a tax cut, watch tax revenue increase, and that proves we still need to cut more.
The controversy is over the fact that it usually takes a year or so for the tax/economy/income/revenue connection to kick in so we end up with several quarters of Dem complaining about less revenue for pork spending...
Cut tax rates until revenues start going down again, then stop.