A couple people have commented that one thing they don't like about Cain's 9-9-9 plan is that the national sales tax is new, and a camel's nose under the tent. While it starts at 9%, what's to keep it from rising - to Europe's 17%, or more?
Cain has a good answer - transparency. It would be obvious to everyone that the tax had just gone up. That's in great contrast to today's tax code, where large changes are made every year to the tax code. One sound bite I remember from yesterday's interview (I don't know if it's true, but it sounds plausible) was that the tax code contains ten million words. That number changes every year, and the changes always result in more taxes being owed. A lot of people only find out when they file their tax returns.
With Cain's plan, this sort of "back door" tax increase becomes much more painful for Congress.
Is increased transparency a panacea? Of course not. Is it an improvement? Seems that way.