"Kurt Hauser is a San Francisco investment economist who, 15 years ago, published fresh and eye-opening data about the federal tax system. His findings imply that there are draconian constraints on the ability of tax-rate increases to generate fresh revenues. I think his discovery deserves to be called Hauser's Law, because it is as central to the economics of taxation as Boyle's Law is to the physics of gases. Yet economists and policy makers are barely aware of it.
"Like science, economics advances as verifiable patterns are recognized and codified. But economics is in a far earlier stage of evolution than physics. Unfortunately, it is often poisoned by political wishful thinking, just as medieval science was poisoned by religious doctrine. Taxation is an important example.
"The interactions among the myriad participants in a tax system are as impossible to unravel as are those of the molecules in a gas, and the effects of tax policies are speculative and highly contentious. Will increasing tax rates on the rich increase revenues, as Barack Obama hopes, or hold back the economy, as John McCain fears? Or both?
"Mr. Hauser uncovered the means to answer these questions definitively. On this page in 1993, he stated that "No matter what the tax rates have been, in postwar America tax revenues have remained at about 19.5% of GDP." What a pity that his discovery has not been more widely disseminated.....
"The data show that the tax yield has been independent of marginal tax rates over this period, but tax revenue is directly proportional to GDP. So if we want to increase tax revenue, we need to increase GDP."
Posted by John Ray. For a daily critique of Leftist activities, see DISSECTING LEFTISM. For a daily survey of Australian politics, see AUSTRALIAN POLITICS Also, don't forget your roundup of Obama news and commentary at OBAMA WATCH