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.
Aurora is the second largest city in Illinois, with a population of 171,782 (2008 est. ) and part of the Chicago metropolitan area. The city refers to itself as "The City of Lights" because it was one of the first cities in the United States to implement an all-electric street lighting system in 1881. Aurora officially adopted the nickname in 1908.