Lane Kensworthy sums up a primary argument of Bruce Bartlett's new book:

The chief economic problem we now face, in Bartlett’s view, is not high marginal tax rates. It is the aging of baby boomers to whom we have made Medicare and Social Security commitments. Absent “massive and politically impossible cuts,” this will cause federal government expenditures to rise from 20% of GDP to around 30% over the coming generation. Supply-side dogma leaves Republicans ill-prepared for this challenge. “When the crunch comes and the need for a major increase in revenue becomes overwhelming,” says Bartlett, “I expect that Republicans will refuse to participate in the process. If Democrats have to raise taxes with no bipartisan support, then they will have no choice but to cater to the demands of their party’s most liberal wing. This will mean higher rates on businesses and entrepreneurs, and soak-the-rich policies that would make Franklin D. Roosevelt blush.”

A better result, according to Bartlett, would be to bring government revenues into line with projected expenditures via a value-added tax (VAT), a type of consumption tax. Heavy use of VATs is a key reason, he says, why “many European countries have tax/GDP ratios far higher than here without suffering particularly ill effects. They may not be growing as fast as they would if taxes and spending were lower, but neither are their standards of living significantly below those of the United States. Even strenuous efforts to show that Europeans are poorer than Americans show that the differences are merely trivial.”

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