FYI the 9-9-9 Plan is now the first step in a two phased transition to the fair tax, according the Cain’s updated plan on his website. I do not support the 9-9-9 plan, but can support it as a transitionary step (though would prefer we jump straight to a FairTax). Taxing labor/income is an abomination.
(I am for the Fair Tax over an income tax.)