While there he tried more than 25 cases involving members of the Genovese , Colombo and Gambino crime families .
From 1991 to 2002 Weissmann worked in the U.S. Attorney 's Office for the Eastern District of New York .
While there Weissmann tried more than 25 cases involving members of the Genovese , Colombo and Gambino crime families .
From 1991 to 2002 Weissmann worked in the U.S. Attorney 's Office for the Eastern District of New York .