973. Sufficiency of Indictment—Mailings or Transmissions in Furtherance of Scheme
"The Government need not allege the subordinate evidentiary facts by which it intends to prove the 'in furtherance' element of the crime charged, and an indictment setting out the mailings charged and alleging that they were in furtherance of the scheme should not be dismissed as insufficient on its face unless there is no conceivable evidence that the Government could produce at trial to substantiate its 'in furtherance' allegation." United States v. Castor, 558 F.2d 379, 385 (7th Cir. 1977), cert. denied, 434 U.S. 1010 (1978). In Castor, the court observed the following concerning the requirement of alleging that the mailings were in furtherance of the scheme:
Id. at 384-85.
[cited in JM 9-43.100]