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.
Rillito is an unincorporated community in Pima County, Arizona, United States, completely surrounded by the town of Marana. The largest business in the community is Arizona Portland Cement and the community has had a post office (ZIP code 85654) since the 1920s. There is a regional park and recreation center (Rillito Vista Community Center) in the middle of the community.