Call me after the amendment to forever end the income tax is a part of the US Constitution.
Until then this is just one more tax scheme by a guy who worked for the Fed.
As long as you’re in your mom’s basement you might as well check the plan for yourself: http://www.hermancain.com/999plan
If you are able to read, you will notice that the intention of 9-9-9 is to move away from income taxes altogether and implement the Fair Tax.
Good luck.
First, it means the underground economy would contribute and so would illegal aliens via the 9% sales tax on new items only.
Second, there is federal taxation but those three flat-rate categories. No FICA, no estate, no loopholes.
Since there's no FICA, all workers will pay less than they currently do.
The 9-9-9 rates can easily be locked in with a good balanced budget amendment like the one associated with Cut, Cap & Balance which requires two-thirds supermajority votes in congress to raise any tax rates.