News Snapshot:
Open this photo in gallery: U.S. President Donald Trump attends the Pennsylvania Energy and Innovation Summit, at Carnegie Mellon University in Pittsburgh on Tuesday.Nathan Howard/Reuters President Donald Trump joined executives from some of the largest U.S. tech and energy companies for a summit in Pittsburgh on Tuesday as the administration prepares more measures to power the U.S. expansion of artificial intelligence. Top economic rivals, the U.S. and China, are locked in a technological arms race over who can dominate AI as the technology takes on increasing importance everywhere from corporate boardrooms to the battlefield. The Energy and Innovation Summit at...