Obama Has Cooties...

Reagan preached tax cut gospel to America’s students: So Reagan says, " 'I studied economics in college when I was young and I learned there about a man named Ibn Khaldun, who lived 1200 years ago in Egypt. And 1200 years ago he said, in the beginning of the empire, the rates were low, the tax rates were low, but the revenue was great. He said in the end of empire, when the empire was collapsing, the rates were great and the revenue was low.'

The students probably didn’t know any better, but this is an idea that has been rejected by virtually every economist not named Larry Kudlow."

...granted, this is a rather weak factoid kind of retort - a really low-level rebuttal, actually - but it's all I had...