Declassified report by the Select Committee of the U.S. House of Rep. on thefts by the People's Republic of China (PRC) from the U.S. National Laboratories, which began at least as early as the late 1970s, & significant secrets are known to have been stolen as recently as the mid-1990s. Covers 3 main points: the PRC has stolen design info. on the U.S.' most advanced thermonuclear weapons; the PRC's next generation of thermonuclear weapons, currently under development, will exploit elements of stolen U.S. design information; & PRC penetration of our national weapons labs. spans at least the past several decades & continues today.