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.
Port Isabel is a city in Cameron County, Texas, United States. It is part of the Brownsville–Harlingen Metropolitan Statistical Area. The population was 4,865 at the 2000 census. The town's name is also attached to the Port Isabel Detention Center located in nearby Los Fresnos.