The Chinese own over 2 million acres of American farmland, more than any other nation. By having that drone backdoor they can get advance information on the condition of all American crops. Possibly scout future land for purchase? They could acquire some of this information by satellite but the pictures from the drones are of higher quality.

The American government has acted decisively to prevent to prevent Chinese telecom equipment being used in the telephone system where it could monitor our communications. They've also convinced Japan and most European nations of the same. Yet they aren't restricted from buying our farmland and monitoring our crops. Farmers are quite concerned about both but so far not the U.S Congress.