Enforcement Nexus has been the subject of many suspicious activities in Grand Theft Auto: Vice City since the release of the game.
The myth was first started when Kent Paul was alleged to be involved with the SWAT Conspiracy and smuggling that allegedly takes place in Little Haiti. This highlighted SWAT's role in the game as a corrupt unit further questioning the status of other units in the city including external elements like GIGN and DGSE, along with the existence of French secret agents like Pierre La Ponce. Moreover, these investigations planned by SWAT and GIGN are said to be assisted by the Vice Squad, Police Informants, and the Washington Beach Police Station's police unit.
A rational explanation to this nexus is that the Vice City government over the years has formed layers of agencies in order to execute their plans.