Presentence Investigation Reports (PSI) from the United States District Court for the District of New Jersey were examined and compared with the Polish law on combating Trust in the National Economy of 1987 to illustrate similar approaches to committing antitrust offenses. This comparative study shows that both the capitalist and socialist antitrust crimes are based on an abuse of dominant market position, limited access to markets, and other anticompetitive measures. Similarly international antitrust violations are shown to have the same basic economic mechanisms as the domestic antitrust. The multidimensional nature of the antitrust doctrine provides a means for fighting free-market economy abuse at both the national and international level. 6 notes and 4 references (Author abstract modified)