Moody’s Investors Service (“Moody’s”) downgraded United States Steel Corporation’s (U. S. Steel) Corporate Family Rating (CFR) and Probability of Default Rating to B2 and B2-PD respectively from B1 and B1-PD respectively. The senior unsecured ratings and Environmental Improvement Revenue bond ratings (ultimately obligations of U. S. Steel) were downgraded to B3 from B2. The Speculative Grade Liquidity rating was unchanged at SGL-2.