President Trump and many leaders of the country's largest technology and energy companies announced more than $90 billion in new investments from private companies in Pennsylvania on Tuesday. Mr. Trump,

President Donald J. Trump joined some of the world’s leading technology and energy leaders at Carnegie Melon University on Tuesday, announcing what he said would amount to billions in planned projects for Pennsylvania.

Some of the world’s biggest companies pledged tens of billions of dollars to accelerate the development of artificial intelligence in Pennsylvania, the latest splashy investments expected to draw praise from President Trump.