@Cycloptichorn,
When it comes to tariffs, the best idea is already out there, but since it was presented in a work of fiction it will never be implemented.
We simply let our trade laws mirror other countries.
Our trade laws with China will be an exact copy of their laws towards us.
The same with Japan and every other country that wants to trade with us.
Our laws will mirror theirs.
That way, if they say their trade laws are fair then they will have to abide by the same laws.