The Government submits a letter to Judge Alison J. Nathan arguing that the defense must disclose exh...

The Government submits a letter to Judge Alison J. Nathan arguing that the defense must disclose exhibits they intend to introduce through Government witnesses as part of their case-in-chief, and that extrinsic evidence for impeachment is narrowly circumscribed. The Government requests that the defense be precluded from offering further undisclosed exhibits absent a showing of cause or an articulation of a valid theory of admissibility.