[2] When J. Edgar Hoover created the Bureau's "Top Hoodlum Program" in 1957, Roemer was personally selected for the task.
With his efforts, he helped the Feds put away Outfit bosses like Sam "Teets" Bataglia and Felix "Milwaukee Phil" Alderisio within a year of their rise to leadership.
[citation needed] During retirement Roemer was an Arizona neighbor with New York City mobster Joe Bonanno.
In the 1996 HBO movie Sugartime[6][7] Roemer appears as a CIA agent who recruits Sam Giancana to assist the US in killing Fidel Castro.
[citation needed] On June 14, 1996, two days before his 70th birthday, William F. Roemer Jr. died of natural causes at his home in Tucson, Arizona.