VAT has made made tax evasion a national sport in the EU
You can guarantee a US VAT will be set up so authority to raise the VAT rate handed off to some bureaucracy like the IRS so no Congress-critter will ever have to go on record as voting to raise it.
NO tax hikes, not new taxes, not one more dime for DC.
We do not have a taxing problem in this country, we have a spending problem. EVEN if you tax every penny over $250,000 at 100%, you still only get enough money to fund the Federal Government for 141 days.