Those are two good arguments for sales tax as a method of taxation.

However, there are some strong arguments against implementing a national sales tax in the U.S.The government has an addiction to growing its power, at all costsGovernment power is maximized, in the short term, via extracting revenue from those who contribute to GDP, while passing much of that “extracted” revenue to those who do not contribute to GDP, but who will vote to continue those government handouts to themAll of the other possible forms of national taxation are already implemented, and government will not eliminate any of the existing taxation methods in order to implement this method. However, they will “promise” to eliminate one or more other forms of taxation over the course of a multi-year “transition” period. They will then engineer a “crisis” event that will require continuation of both the old and new forms of taxationThat is why adding a national sales tax is a no-go proposition