I have been researching this a bit. Tyson said it is a hoax. All the articles I can find have been written a few yrs ago. Below are just a few of the articles I read.
https://www.tysonfoods.com/news/viewpoints/hoax-china-poultry-exports-us
https://boingboing.net/2018/09/14/usda-approves-shipping-slaught.html
https://www.themadeinamericamovement.com/country-of-origin-cool/chicken-from-china-labeled-made-america/
China Poultry Exports to U.S. is a Hoax | Tyson Foods, Inc.
All chicken Tyson Foods sells in the U.S. is raised & processed in the U.S. We do not use chicken imported from other countries. All other information is a hoax.
https://www.tysonfoods.com/news/viewpoints/hoax-china-poultry-exports-us