Shifting costs downstream is the point. It imposes a cost on consumers for the externality they are creating by purchasing goods manufactured overseas.
The method you describe is way more easily gamed than a tarrif. What constitutes x% of their goods?
Tarrifs are more proportional to the externality we want to discourage.
The method you describe is way more easily gamed than a tarrif. What constitutes x% of their goods?
Tarrifs are more proportional to the externality we want to discourage.