As the British realized in 1776, nothing grabs Americans' attention quite like taxes do. I think we're in the midst of another tax rebellion, and the recent rejection of huge tax hikes by the citizens of Alabama was the most recent battle. In 2002, a ballot initiative in Massachusetts that would have eliminated all state income tax was narrowly defeated, but will be re-proposed in 2004. In July, 2003, the Nevada Supreme Court intervened to raise state taxes when the legislature refused to do so. A similar scam was tried in California, but was rejected; despite California's huge deficit, our legislature refused to raise taxes (at least the Republicans did).
There are many more such stories; many states are considering initiatives such as the one that failed in Massachusetts in 2002, and eventually one such attempt will pass. Once a single state income tax is eliminated via ballot initiative, I expect that many others will follow. The Fair Tax Act of 200X won't be far behind.
My only complaint with the Fair Tax approach is that we have to repeal the 16th amendment at the same time as the proposed national sales tax takes effect.
Even if the income tax rates are reduced to 0, without repeal of the 16th amendment, they will steadily rise once again and we'll be ever closer to socialist France with it's 23% VAT (I think that's the right number) and highly progressive income tax.
The proposed Fair Tax Act also introduces a bill to repeal of the 16th Amendment -- which must independently pass with 2/3 of Congress and 3/4 of the state legislatures on board, of couse.