CATERPILLAR, INC. v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY, and INTERNATIONAL UNION, UNITED AUTOMOBILE, AEROSPACE AND AGRICULTURAL IMPLEMENT WORKERS OF AMERICA and LOCAL 9741
CATERPILLAR, INC. v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY / INTERNATIONAL UNION, UNITED AUTOMOBILE, AEROSPACE AND AGRICULTURAL IMPLEMENT WORKERS OF AMERICA and LOCAL 974
CATERPILLAR INC. v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY and INTERNATIONAL UNION, UNITED AUTOMOBILE, AEROSPACE AND AGRICULTURAL IMPLEMENT WORKERS OF AMERICA and LOCAL 974