Antitrust and Trade Regulation laws aim to promote free competition in the marketplace. Agreements or cooperative efforts by two or more entities that affects or restrains competitors is illegal under these laws. The Sherman Act makes illegal any contract, combination, or conspiracy in restraint of trade or commerce and makes monopolies and attempts, combinations, or conspiracies to monopolize illegal. The Clayton Act regulate price discrimination, tying and exclusive dealing contracts, stock acquisition and interlocking directorates.
Enola is a census-designated place (CDP) located along the Susquehanna River in East Pennsboro Township, Cumberland County, Pennsylvania, United States. The population was 5,627 at the 2000 census. Norfolk Southern operates Enola Yard, a large rail yard and locomotive shop in Enola. It is a suburb of Harrisburg and is part of the Harrisburg–Carlisle Metropolitan Statistical Area.