A congressional investigation has revealed that Chinese manufacturer Shanghai Zhenhua Heavy Industries (ZPMC) has installed unauthorized cellular modems on ship-to-shore cranes at U.S. ports, raising significant national security concerns. These modems, which were not requested by U.S. port authorities, could potentially allow the Chinese Communist Party (CCP) to surveil or manipulate crucial port operations, as ZPMC holds contracts for about 80% of cargo cranes in the U.S. The House committees urge immediate action from the Department of Homeland Security to disconnect these devices, citing risks of espionage and operational disruption. The investigation highlighted challenges faced by port operators who feel pressured to allow remote access to ZPMC for equipment monitoring. U.S. officials are increasingly worried about reliance on Chinese technology in critical infrastructure, particularly amid rising tensions over Taiwan. In response, the U.S. is looking to bolster domestic production of port cranes to mitigate these vulnerabilities.