JB Hunt fired the first warning shots during its quarterly results, saying demand was weak, sending shares of the whole group lower. Then Knight-Swift followed.
Under the rules, medium- and high-risk products, which include meat and dairy products, as well as most plants, could be subject to checks at the borders
for biosecurity.
Beijing earlier blasted a U.S. plan to launch a formal review of its maritime, logistics and shipbuilding sector, calling the investigation a mistake “based on the need of domestic politics.”