From the Wall  Street Journal:
 
With states facing nearly $100 billion  in combined budget deficits this year, we're seeing more governors than  ever proposing the Barack Obama solution to balancing the budget: Soak  the rich. Lawmakers in California, Connecticut, Delaware, Illinois,  Minnesota, New Jersey, New York and Oregon want to raise income tax  rates on the top 1% or 2% or 5% of their citizens. New Illinois Gov.  Patrick Quinn wants a 50% increase in the income tax rate on the wealthy  because this is the "fair" way to close his state's gaping  deficit.
Mr. Quinn and other tax-raising governors  have been emboldened by recent studies by left-wing groups like the  Center for Budget and Policy Priorities that suggest that "tax  increases, particularly tax increases on higher-income families, may  be the best available option." A recent letter to New York Gov.  David Paterson signed by 100 economists advises the Empire State to  "raise tax rates for high income families right away."
 
Here's the problem for states that want  to pry more money out of the wallets of rich people. It never works  because people, investment capital and businesses are mobile: They can  leave tax-unfriendly states and move to tax-friendly states.
 
And the evidence that we discovered in  our new study for the American Legislative Exchange Council, "Rich  States, Poor States," published in March, shows that Americans  are more sensitive to high taxes than ever before. The tax differential  between low-tax and high-tax states is widening, meaning that a relocation  from high-tax California or Ohio, to no-income tax Texas or Tennessee,  is all the more financially profitable both in terms of lower tax bills  and more job opportunities.
Updating some research from Richard Vedder  of Ohio University, we found that from 1998 to 2007, more than 1,100  people every day including Sundays and holidays moved from the nine  highest income-tax states such as California, New Jersey, New York and  Ohio and relocated mostly to the nine tax-haven states with no income  tax, including Florida, Nevada, New Hampshire and Texas. We also found  that over these same years the no-income tax states created 89% more  jobs and had 32% faster personal income growth than their high-tax counterparts.
 
Did the greater prosperity in low-tax states happen by chance? Is it coincidence that the two highest tax-rate states in the nation, California and New York, have the biggest fiscal holes to repair? No. Dozens of academic studies -- old and new -- have found clear and irrefutable statistical evidence that high state and local taxes repel jobs and businesses.
