The most persistent of all legends, still present in Tommaso Buscetta's confessions, is that there once existed an honourable mafia which refused on principle to involve itself in drug operations. If this version of history is clearly inaccurate, involvement in the drugs trade did lead to profound changes in the mafia. It produced enormous profits, led to the closer ties with Cosa Nostra in the USA and to the internationalisation of the mafia. Giovanni Falcone's investigations into mafia income led him to conclude that while the mafia as such had not involved itself in the drugs trade, it left individual members to pursue their own interests. Sicilians for a certain period controlled the trade internationally and the sheer volume of money compelled the mafia to move into the world of international high finance.