The House Select Committee on the Chinese Communist Party sent a letter on Saturday to SpaceX and Tesla CEO Elon Musk demanding that U.S. troops stationed in Taiwan get access to SpaceX’s Starshield, a satellite communication network designed specifically for the military.

The letter, obtained by CNBC and first reported by Forbes, claimed that by not making Starshield available to U.S. military forces in Taiwan, SpaceX could violate its Pentagon contract, which requires “global access” to Starshield technology.