Highlighted are (1) the problem posed by Jamaican organized crime groups, particularly in the areas of drug trafficking and firearms offenses and (2) the coordination of State and local efforts with those of the Bureau of Alcohol, Tobacco, and Firearms in dealing with these groups. Experiences of the Kansas City Police Department (Missouri) with these groups exemplify the national nature of their activities. The interagency approach used in Canada to deal with organized crime and related jurisdictional problems is outlined, and the task force approach to narcotics offenses and organized crime in New York is discussed. The major provisions of the Racketeer Influenced and Corrupt Organizations Act are reviewed, and its effectiveness in combatting organized crime is illustrated. The importance of police-community and interagency cooperation in controlling organized activities of gangs in Boston's Chinatown also is discussed. Finally, the major investigatory tools used by the Internal Revenue Service in identifying and prosecuting money laundering are considered, and several successful tax evasion and drug trafficking prosecutions are presented.