From the Summary: "Zacarias Moussaoui, members of the Colombian drug cartels, members of organized crime, and some of the former Enron executives have at least one thing in common: they all have federal conspiracy convictions. The essence of conspiracy is an agreement of two or more persons to engage in some form of prohibited conduct. The crime is complete upon agreement, although some statutes require prosecutors to show that at least one of the conspirators has taken some concrete step or committed some overt act in furtherance of the scheme. There are dozens of federal conspiracy statutes. One, 18 U.S.C. 371, outlaws conspiracy to commit some other federal crime. The others outlaw conspiracy to engage in various specific forms of proscribed conduct. General Section 371 conspiracies are punishable by imprisonment for not more than five years; drug trafficking, terrorist, and racketeering conspiracies all carry the same penalties as their underlying substantive offenses, and thus are punished more severely than are Section 371 conspiracies. All are subject to fines of not more than $250,000 (not more than $500,000 for organizations); most may serve as the basis for a restitution order, and some for a forfeiture order."
CRS Report for Congress, R41223
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html