This is exactly my position as well. Every country in the world needs to be held to certain minimum standards.

If a country pays its workers pennies and craps all over the environment, it sucks for the people that live there, but really it's fine, they're a sovereign nation, nobody's gonna send in the troops over it.

Let's simply charge them enough to take all the money they save / make from these practices out of their pockets. If they don't pay up, the goods can't cross the border.