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.

During the visit, President Trump will be joined by Pennsylvania Senator Dave McCormick, who is hosting the inaugural Pennsylvania Energy and Innovation Summit. It looks to bring together the top leaders in the energy, AI, global investment, labor, and trade sectors, and government officials.

Western Pennsylvania has had its troubles. After the end of the steel boom, the area decayed, unemployment was rampant — still-vacant coal-fired power plants, steel mills and manufacturing plants stand as ghostly sentinels of an era that vanished long ago.

Nippon Steel has successfully acquired U.S. Steel after an 18-month process, with the deal now including concessions such as a "golden share" for the U.S. government.

According to Trump, “We have a golden share, which I control or the President controls. Now, I am concerned whoever the President might be, but that gives you total control.” The deal requires the Treasury and Commerce Departments to manage this deal after Trump leaves office, essentially passing the golden share to the next President.

Trump’s initial April 2 “Liberation Day” announcement of across-the-board tariffs on countries around the world sent markets into a tailspin. Trump relented – temporarily – announcing a 90-day cessation on higher tariffs, while imposing a 10 percent baseline levy on all trading partners.

President Donald Trump will announce $70 billion in artificial intelligence and energy investments in Pennsylvania on Tuesday, the latest push from the White House to speed up development of the emerging technology.