I personally think that the mechanics of tarrif's wouldn't work with P&W's trade system cause a tariff in real life are for against countries that really have no other choice to trade with that country those things, but in P&W so many people produce so many things that would just either wildly effect prices or just make the person trade with someone else, cause 5% of an $80 ppu food or whatever makes it's total cost 84, other people would be selling it for 81~83 more than likely.