If you're searching for the next big thing in American politics, it's wise to keep an eye on the states. Here's one possibility: the abolition of state income taxes.

In Georgia, Missouri and South Carolina, Governors and state legislatures are drafting serious proposals to repeal their income taxes to promote economic development. St. Louis, one of America's most distressed cities, may overturn its wage/income tax as a way to spur urban revival. And in Michigan, the legislature is in the last stages of phasing out its hated business income tax -- the most onerous in the land. "States are now ...