The problem is that the US has no moral high ground here. We too have prisoners manufacturing goods below minimum wage, and while you won't be jailed in the US

The problem is that the US has no moral high ground here. We too have prisoners manufacturing goods below minimum wage, and while you won't be jailed in the US because of your political affiliation, you definitely can be jailed because of your religion, ethnicity, etc. If we applied this to foreign transactions, foreign countries could easily use the same grounds to block goods and services coming from the US.