The pricing will be determined by the sellers for the American market.
The government need not be involved in setting the price. The sellers all know what the domestic market price should be
The government need not be involved in setting the price. The sellers all know what the domestic market price should be
NOBODY knows what prices 'should be'. Prices are constantly discovered by buyers and sellers.
You wrote, "Domestic sales are priced at the cost + overhead and profit within the 50 states as normal commerce," but that isn't how market prices are determined. Prices are a function of supply and demand.
Market prices are not 'cost plus'. Prices can be below cost, which is a signal to producers and investors to reduce production. Prices can also be well above cost, and the profit size is a signal to producers and investors to increase production.
Trying to regiment prices around costs is not what markets do, and completely misses the point of prices in a market economy. Prices are the distillation of innumerable aspects of valuation. They represent information. Trying to set prices on a 'cost plus' basis ignores the fundamental role prices play in coordinating production and consumption based on true fundamentals.