Local mayors and U.S. Steel employees expressed cautious optimism about the "planned partnership" between U.S. Steel and Japan-based Nippon Steel as President Donald Trump visited the U.S. Steel Mon Valley Works-Irvin Plant facility in West Mifflin on Friday. See their reactions and scenes from the event. Read more about the visit at the link in our bio. 📝: Steve Bohnel/Post-Gazette 🎥: King Jemison/Post-Gazette Editing: Jacob Comer/Post-Gazette #ussteel #trump #pittsburgh