The three-pronged plan, which comprises a 9 percent national sales tax, a 9 percent income tax and a 9 percent corporate tax, was a hot topic at the most recent Republican debate on Tuesday, as Cain's election opponents sought to discredit the idea.
“Eliminating taxes on capital gains and dividends and combining that with huge rate cuts in both corporate and income taxes would create an unparalleled economic boom," Chocola said. "9-9-9 also eliminates the regulatory and compliance costs from the current tax code that suck billions out of the economy each year."
Earlier this month, Chocola had praised Cain and said he was rising in the polls because "his clear message of limited government and economic freedom is resonating."
Club for Growth's endorsement clashed with a slew of opposition that started at Tuesday night's GOP debate and extended from that stage to conservative groups that back changes to the tax code.
“When you take the 9-9-9 plan and you turn it upside down, I think the devil’s in the details,” Minnesota Rep. Michele BachmannMichele Bachmann'Real Housewives' producer 'begging' Conway to join cast Ex-rep admires furs amid PETA inaugural gala Why Republicans took aim at an ethics watchdog MORE said Tuesday night.
Rick Santorum, a former senator from Pennsylvania, called the plan “naïve.”
And former Massachusetts Gov. Mitt Romney told Cain that “simple answers are always very helpful, but oftentimes inadequate.”
On Thursday, Grover Norquist, who heads the anti-tax advocacy group Americans for Tax Reform, came out Thursday against the tax overhaul proposal.
He told MSNBC that the plan is "like having three needles in your arm taking blood out. It's much more dangerous than just one."