PITTSBURGH–(BUSINESS WIRE)—- $X #BestForAll–United States Steel Corporation (NYSE: X) (“U. S. Steel”) today issued its 2021 Sustainability Report highlighting its continued transformation and investments in sustainable and advanced steelmaking technologies, enhancing the Company’s competitive advantages. “I am excited about the significant progress we continue to make on our sustainability goals and what it means for our people, customers, communities and products,” said David B. Burritt, U. S. Steel Presiden