Brief for appellee, United States, United States Court of Appeals for District of Columbia Circuit, no. 99413, International Union, United Mine workers of America, and John L. Lewis, as president, International Union, United Mine Workers of America v. United States; no. 9044, International Union, United Mine Workers of America, and John L, Lewis, as president, International Union, United Mine Workers of America, and iis union representative trustee, Board of Trustees, United Mine Workers of America welfare and retirement fund v. [same]; appeals from District Court of United States for District of Columbia.