What you are talking about is a "Value Added Tax." In every country that ever instituted a VAT income taxes were never repealed.
Well that sucks! But I don't think it is cast in stone. Honestly though, I don't think democrats will ever let go of income taxes. But given that, perhaps they can go back to the original income tax that started at 5X the median income. Today that would be about @200,000. Back to partisan politics briefly, if they loose a lot of seats this time their agreeability to income tax changes like this will come way up.
Maybe, but if he is he is barking up the wrong tree. A Vat tax is applied at every level of production from raw material to assembly. Thus there would be WAY more taxes bundled into a totally domestically created product as opposed to a competive foreign product that could only be taxed at the final retail sale.
I thought he meant a federal retail sales tax, but actually I'm not sure he knows just WHAT he means.