You really have to feel sorry for these guys: Of the 194 billionaires FORBES turned up in 1989, 113 failed to make it onto this year's list of the workingrich.
Reduce tax rates and the workingrich will work more while the idle rich will accelerate capital gains, shift their investments to more economically efficient private securities, and hide less income.
Raise tax rates and the workingrich will work less, defer income, and take more non-cash compensation while the idle rich will defer capital gains, shift their investments to more tax efficient securities like municipal bonds, and (yes) evade taxes.