What is the united states policy for sales tax refund for tourists?

Question

What is the united states policy for sales tax refund for tourists?

Answer 1

There is no rebate.  Sorry.

Unlike VAT in many countries levied at a single rate (or 2 or 3 at most) the US has literally thousands of tax districts (when local option sales taxes are tacked on) with widely varying rates so it would be impossible to administer a rebate program.