In response to:

The Flat Tax the U.S. Effectively Already Has

Grant75 Wrote: Dec 10, 2012 1:36 PM
This doesn’t include sales tax and government mandated business expenses that “roll down hill.” The poor get hit especially hard by those costs.

Harvard economist Greg Mankiw offered a unique observation following the release of the findings of a CBO study on the effective marginal tax rates that many Americans really pay on their incomes, after taking into account any government assistance they might receive and the income levels at which their welfare benefits phase out:

The Congressional Budget Office has a new study of effective federal marginal tax rates for low and moderate income workers (those below 450 percent...
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