The argument is BOGUS as your Laffer curve diagram indicates.
If tax rate is at point A a tax increase will increase Revenue. At “Equilibrium?” or any tax rate higher an increase in rates will DECREASE total tax Revenue. This means it’s STUPID even for Big Govt Supporters to have a rate higher than this, UNLESS they wish themselves and US ILL.
However, the objective is NOT to Maximize Government revenue but to Maximize Personal Freedom so rates should be Much Lower than “Equilibrium?”.
Would you care to comment on your blog about this video? I think you’ll find it quite interesting
http://www.freedomandprosperity.org/videos/laffercurve1-3/laffercurve1-3.shtml