United States Marshal Standing Trial in Chicago for Cooperating with the Mob

What happens when one of the good guys turns?

If the U.S. Attorney in Chicago’s allegations are correct about U.S. Marshal John Thomas Ambrose, he was connected with the mob.

You see this week’s Chicago Sun-Times article above.

That happened in Boston when FBI Agent John J. Connolly warned the mob
that the FBI intended to question Boston financier John B. “Callahan who could implicate them in another slaying,” according to The Boston Globe on January 25, 2008.

A bit more of the article:

“Connolly, who retired from the FBI in 1990, is accused of plotting with longtime informants James ‘Whitey” Bulger and Stephen ‘The Rifleman” Flemmi to kill Boston financier John B. Callahan in 1982.”

In Chicago, the government alleges that Ambrose, referred to as “the Babysitter,” was now-convicted mobster Michael Marcello’s inside source of information about the investigation in which Nicholas Calabrese, a made member of the Chicago Outfit, was the source. Calabrese was in the Witness Protection Program and Ambrose was charged with protecting him.

Read the whole press release about the criminal complaint against U.S. Marshal John Ambrose here.


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