A key partner for Elon Musk’s Tesla is threatening to sue the U.S. government over the Pentagon’s decision to blacklist it from federal contracts, blasting it as a “mistake.”

Ford has a licensing agreement to manufacture electric vehicle batteries with technology from a Chinese company that's under scrutiny at the Pentagon.

The addition of Contemporary Amperex Technology Co., Limited (CATL) to a Chinese military-linked entities list has thrust Tesla’s reliance on the Chinese battery giant into the spotlight. While the designation currently imposes no direct sanctions,