The White House on Wednesday reiterated its call to defend its artificial intelligence lead against a quickly advancing China by exporting “cohesive AI tech stacks” that integrate not just chips but also algorithms and applications to foreign countries. Michael Kratsios, director of the White House Office of Science and Technology Policy, told a Senate subcommittee hearing that the US once commanded a “comfortable” lead in AI over closest competitors, such as China, in 2020, but by 2024 the gap...