of the cooperating witness. As informed juries will expect other corroborating elements, such evidence is typically provided. There is no objective reason why such witnesses should be inclined to lie to suit the government, regardless of whether there is an agreement for their testimony. Where an agreement exists, testimony substantially at odds with other evidence known to the government regardless of admissibility, runs the risk that the witness will lose the benefits contemplated by the agreement in addition to a perjury charge. In either event, the witness is subject to perjury. The incentive to be truthful may thus be enhanced, not necessarily reduced, by the existence of the witness’ agreement with the government. See United States v. Borello, 766 F.2d 46, 56-57 (2d Cir.1985) (<HOLDING>) (citing cases). It is common knowledge that
holding that warnings given to a witness by the trial court and the prosecutor concerning the possibility that testifying could place the witness in jeopardy of revocation of his plea agreement and charges of perjury or false statement did not violate the defendants due process rights because the warnings merely corroborated in a straightforward and nonthreatening manner the information given by the witness attorney holding that the defendants due process rights were violated when the trial judge singled out the only defense witness and indicated to that witness that he expected the witness to he and would personally ensure that the witness was prosecuted for perjury and thereby effectively drove that witness off the stand holding that promises made by the prosecution to a witness in exchange for that witness testimony relate directly to the credibility of the witness recognizing that informing the jury that testifying witness has agreed to cooperate with the government is a doubleedged sword as the existence of such agreement may suggest either that the witness will testify in accordance with the governments wishes regardless of the truth or that the witness will not he under threat of revocation of the agreement should the witness commit perjury holding that evidence of a threat to a witness by the defendant is relevant as showing an attempt to prevent a witness from testifying and avoid punishment for the crime