From what I've heard a 10% VAT would bring in 1 trillion for the US govt. a year. If that's right than a 1% tax would be 100 billion. That sounds like a pretty decent moneymaking opportunity for the government without upsetting the voting population too much.
This is presumably coming from the simplistic numbers, consumer spending is 70% of US GDP and US GPD is $14 trillion, and 10% of 70% of that would indeed be $1 trillion.
Assuming this money would be used to reduce debt, this would effectively reduce US economy by the said 7%. Oops
Note: I'm not claiming this is necessarily correct, just trying to show that such simplistic approaches don't work in determining policy.
McHrozni