The U.S. sanctions on products produced in the Xinjiang Region will not be effective and will tend to harm the Uyghurs more than the Han Chinese.
Xinjiang is over 50% Uyghur and Uyghurs produce the majority of the goods there.
Sanctions against products manufactured in Xinjiang using "slave labor" will have a generally depressive effect on demand for all products produced in the region, not just those produced in prison camps.
Therefore, the worst impact will be on the Uyghur majority in Xinjiang and will only have a slight effect on Han Chinese generally.
The repressive policies in Xinjiang come out of Beijing and Beijing should be held responsible.
If sanctions are to be used, they should be on Chinese exports generally, not exports from the Xinjiang Region specifically.
Other policies should be studied that might be of assistance to the Uyghurs.
However, we should temper our expectations, particularly when we consider the abject failure of international efforts to free Tibet, which is a region bordering Xinjiang that is also subject to severe Chinese persecution and control.