I wish I could say that I was surprised to learn that one fifth of the world's cotton garments are made from material sourced to Xinjiang in China, the misleadingly named "autonomous region" in which the country's Uighur Muslim minority are subject to forced labor. I also wish that I could nod along with the coalition of human rights groups and labor unions demanding that companies from Adidas to L.L. Bean stop relying upon slavery.Instead, I groaned. This is not because I am indifferent to the plight of the Uighurs and to millions of workers exploited by the global fashion industry around the globe, but because the most recent calls for American companies to divest from Xinjiang are painfully naive. Like most such campaigns, this one is most likely to accomplish one thing: making those who read about it feel better.The truth is that even if all of the brands named in this press release agreed to do exactly what is being asked of them — namely, close their factories i...