(April 3, 2017, 3:59 PM EDT) -- HAMMOND, Ind. — A federal judge in Indiana on March 31 approved a proposed settlement between the federal government, Illinois, Michigan and Indiana and United States Steel Corp. over violations of the Clean Air Act (CAA), but acknowledged comments from objectors to the agreement who sought a harsher civil penalty or an agreement that the company take on more environmental projects (United States of America, et al. v. United States Steel Corporation, No. 12-CV-304-PPS-APR, N.D. Ind., 2017 U.S. Dist. LEXIS 47607)....