But the jury in the case, which deliberated 10 hours over two days, rejected his entrapment defense.

The entrapment defense does not serve to exclude evidence, even if obtained in a sting.

But jurors later said they examined and rejected the entrapment defense.

But in the District of Columbia, the entrapment defense is especially difficult, lawyers say.

The entrapment defense in the United States has evolved mainly through case law.

The group contends that not one entrapment defense has worked in a case with evidence brought by the organization.

"Mine would have been the perfect entrapment defense on Sept. 10, 2001," the lawyer said.

An entrapment defense opens the door to presenting evidence about the behavior of police and informants.

He pleaded not guilty and planned to use an entrapment defense for the federal trial, scheduled to begin on November 29, 2010.

The entrapment defense at the federal level exists entirely in case law.