That graph just shows the truth--that the burden will shift from higher income people to lower income people.. duh they spend more of their income % wise.
You guys need to find some prominent economists who support such a system and come back to us thx.
It's utter nonsense. People support this because it sounds good and have not done any real analysis of what it would mean to the economy. For the record the Dem candidates were spewing things last night about the tax code that was just as nonsensical. (the main reason I think Edwards is a poor candidate.) It's designed the way it is for a very specific reason, and that is to stimulate economic growth and job production. It works quite well. although there are some crazy loopholes that big corporations are driving their own truck through right now.
I fail to see how any tax system that discourages people from spending money can be good for the economy as a whole. If you work for a company that sells expensive widgets to other companies (like I do), they will have to pay sales taxes on those widgets, rather than writing the expense off and reducing the company tax burden. Unless they just exempt companies from paying tax altogether, which is probably what their plan is so that middle class people (employees, not investors) can pick up the slack.