U.S. Deputy Marshal loses federal appeals fight in Chicago 
mobster leak case
	A Deputy U.S. Marshal admitted leaking information that 
he was protecting a member of Chicago’s organized crime group 
through the witness protection program. Miranda protections 
won’t negate the conviction, the U.S. Court of Appeals for 
the Seventh Circuit recently ruled.
	By Joe Forward, Legal Writer, 
State Bar of Wisconsin
	 Feb. 16, 2012 – Adding to the storied storyline of 
the 2007 “Family Secrets” trial that brought down high 
ranking members of the Chicago mob, the U.S. Court of Appeals for 
the Seventh Circuit ruled today that a U.S. Deputy Marshal was properly 
convicted for leaking information.
 Feb. 16, 2012 – Adding to the storied storyline of 
the 2007 “Family Secrets” trial that brought down high 
ranking members of the Chicago mob, the U.S. Court of Appeals for 
the Seventh Circuit ruled today that a U.S. Deputy Marshal was properly 
convicted for leaking information.
	In 2009, a federal district court convicted Deputy U.S. Marshal John Ambrose for disclosing 
information about hit-man Nicholas Calabrese’s 
cooperation with federal authorities. Calabrese was a 
“made” member of organized crime in Chicago, otherwise known 
as the Chicago Outfit.
	Ambrose was on security detail to protect Calabrese, who 
entered the witness protection program in 2002 and implicated 
other mob members in crimes spanning four decades.
	Calabrese admitted participation in 16 murders 
and knowledge of 22 others, including the murders of Anthony and Michael 
Spilotro, who were found buried in an Indiana 
cornfield in 1986. Those murders, and the exploits of the Spilotro 
brothers, inspired storylines in the 1995 film 
“Casino,” directed by Martin Scorsese and 
starring Joe Pesci and Robert De Niro.
	Ambrose became known as the “babysitter” by mob leaders 
James and Michael Marcello, who authorities recorded discussing the 
Calabrese situation while in federal prison. 
Evidence, like fingerprints on Calabrese’s 
witness protection file, revealed that Ambrose was likely the 
“babysitter” indirectly providing the Chicago mob members 
with information about Calabrese.
	A U.S. attorney and a FBI special agent eventually interviewed Ambrose, 
confronting him with the evidence against him. They did not read Ambrose 
his Miranda rights, which safeguard against self-incrimination 
when a suspect is in custody and being interrogated.
	Ultimately, Ambrose admitted leaking information to William Guide, who 
was one of 10 Chicago cops busted, along with Ambrose’s father, in 
the 1980s for taking bribes.
	Ambrose told authorities at one point that Guide had ties to the 
Chicago mob, and revealed the information to curry favor with mob 
members for future fugitive investigations.
	But in court, Ambrose argued that certain inculpatory statements should 
have been suppressed because he did not receive Miranda 
warnings before making them.
	In U.S. 
v. Ambrose, No. 09-832 (Feb. 16, 2012), a three-judge panel 
disagreed, concluding that although it was an 
“interrogation” for Miranda purposes, Ambrose was 
not “in custody.”
	The appeals panel concluded that the circumstances of the interview 
conducted with Ambrose at an FBI building in Chicago were not indicative 
of “custody” for Miranda purposes, and any doubt 
was dispelled when the U.S. attorney told Ambrose he was not under 
arrest.
	“In light of [the U.S. Attorney’s] statement that he was 
not under arrest and his reference only to the possibility of future 
charges, a reasonable person in that situation would have believed that 
he could terminate the discussion and leave,” Judge Ilana Rovner 
wrote.
	The second stage of the interview, where Ambrose confessed more 
information, did not require Miranda warnings either, the 
appeals court panel concluded, noting that “the circumstances of 
those conversations were inconsistent with a person who was under 
arrest.”
	Not hearsay
	The appeals panel also rejected Ambrose’s argument that the 
“Marcello tapes” were improperly admitted despite hearsay 
rules, because the government had failed to implicate Ambrose in a 
conspiracy theory linking him directly to the Chicago mob.
	The federal district court allowed the government to introduce only 
portions of the Marcello tapes to prove the Marcellos actually received 
information about Calabrese’s status as a witness, and as 
circumstantial evidence that Ambrose was the one who revealed it.
	“With so many layers of retelling, the reliability of the 
information is certainly suspect, and was properly excluded as hearsay 
by the court,” the panel noted. “The court allowed only the 
use for non-hearsay purposes and Ambrose has failed to demonstrate how 
that was erroneous.”
	Thus, the appeals panel upheld Ambrose’s conviction for stealing 
government property and disclosing information without authorization, 
along with his four-year prison sentence.