If you're worried about ending up with both an income and sales tax, you're smart to worry.
That being said, you need to know that we are in great jeopardy of that happening right now - starting with internet sales.
The fact is we are not protected from this double-whammy at all right now. We could wake up tomorrow and have both. Horrific thought, eh?
Look into HR2525, Phantom Lord. Because it offers several significant barriers to having both systems.
Briefly; it defunds IRS, it destroys existing income tax records, it erases the entire income tax code out of existence, and it eliminates any withholding whatsoever.
That would make it much, much more difficult than now to end up with both systems.
That being said, you're damn right we need to repeal the 16th! But don't make us wait until a constitutional amendment can be passed- that'll be long after the thirst for tax reform has been eliminated by dem/lib pols.
Indeed, the most frequently used reason for not wanting a sales tax is feeding fear based on ignorance....sound like a dem/lib arguement?!