This would end this sort of preferred drug shifting, it would end the game of state Medicaid often mandating the name brand rather than the generic because most of the money is federal and the state receives a big enough rebate that it's cheaper for them. Applied internationally (we don't have direct authority over foreign drug companies but we could make it a condition of importing them to the US that they follow our pricing rules) and the big subsidy to the UHC countries goes away.