Core Viewpoint - A group of nine U.S. lawmakers is urging the Pentagon to include several Chinese technology firms on a list of entities allegedly assisting in activities that may threaten U.S. national security [1] Group 1 - The lawmakers are concerned about the involvement of Chinese technology firms in activities that could undermine U.S. interests [1] - The letter emphasizes the need for increased scrutiny of these firms to protect national security [1] - The request reflects ongoing tensions between the U.S. and China regarding technology and security issues [1]