Here is Laffer himself on the subject:
The Laffer Curve: Past, Present, and Future
And here's the WSJ editorial page showing how the Bush tax cuts increased revenue.
Facts are not friends here:
How to Soak the Rich (the George Bush Way) - WSJ.com
You WSJ article states that Capital Gains revenues increased, which is true...
Capital Gains revenues increased because there were tens of Trillions of dollars worth of fake assets, in the form of Credit Default Swaps and Mortgage Backed Securities, on the market.
The reason why this happened during the Bush administration was not due to his lowering of the Capital Gains tax... but was in fact due to the legalizing of Credit Default Swaps in the infamous 2000 Commodities Futures Modernization Act.
SO mortgage backed securities are fake assets?
So much for your credibility, Goober.
In the manner they were sold, they absolutely were. Investors were told the securities had a much more stable value than they actually did.