> china sells the goods to the philippines at 1$. the philippines then sells it to the usa at 1.50$ and bypassed the tariffs. this is easily countered by imposing a 150% punitive tariff on everything from a country that allows pass-through policies. that will deter the philippines from colluding with china in your example. tariffs -- or more accurately the threat of tariffs -- are a great way for countries like the us to make other countries play fair.
United States