Other studies in New Jersey, Connecticut and Rhode Island have also failed to offer proof that taxes are the main driver of out-migration by the top earners. (See here and here). In some states, weather is a bigger driver of out-migration by the wealthy than taxes.
Still, with top earners paying the largest share of taxes in many high-income states, many politicians don't want to take the risk of raising tax rates further.
Correction: An earlier version of this story incorrectly said President Obama would ask Congress Monday to extend tax cuts for those making $250,000 or more. In fact, it was for those making $250,000 or less.
-By CNBC's Robert FrankFollow Robert Frank on Twitter: @robtfrankPage 3 of 3 | Prev Page