The FBI alleges that the two men duped a number of Secret Service agents, including one assigned to the first lady's detail, as part of a long-running scheme.
Mandatory Credit: Bill Hennessy
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Secret Service on the defensive over allegations agents were duped by men impersonating feds
A series of embarrassing security lapses involving two men charged with impersonating federal agents have put the Secret Service on the defensive and angered at least one top national security official in DC, sources tell CNN.
