The idea of a Chinese-U.S. arms race for artificial intelligence conjures up images of an army of swarmbots defeating self-driving tanks on a smoldering, depopulated hellscape. It's an idea so captivating that Sen. John Cornyn, R-Texas, wants to make it harder for the Chinese to invest in U.S. technology development, including in companies developing artificial intelligence, out of fear that Beijing will use small investment positions in Silicon Valley firms to erode U.S. national security and technological advantage. But tech entrepreneurs, academics in the field, and former senior officials in the White House and Pentagon think the proposal would do more harm than good.