United States v. Clacy Herrera

POSNER, Circuit Judge.

Two years ago, in response to a petition for a writ of mandamus filed by the government during the criminal trial of the defendant on drug charges, we ordered the district court to admit into evidence an exhibit labeled “Roberson Seizure 2”; to allow the government to recall Stephen Koop to testify at trial about the recovery of latent fingerprints from that exhibit; and to allow testimony regarding comparison of the latent prints with patent fingerprints known to be the defendant’s. In re United States, 614 F.3d 661 (7th Cir.2010). The judge had excluded the exhibit and…