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.
Winfield is an incorporated village located in Milton and Winfield Townships, DuPage County, Illinois, United States. The population was 8,718 at the 2000 census, and estimated to be 9,984 in 2008. Winfield is home to Central DuPage Hospital, one of the largest hospitals in the Chicago suburbs. Winfield has a Metra station on the Union Pacific/West Line, which provides regular commuter rail service to Chicago.