Whether the district court plainly erred by admitting testimony that Gomez fit a drug-courier profile.
Holding
No. Gomez did not preserve a Rule 403 objection, and admission of the profile testimony for the limited purpose of providing background and explaining the inspectors' actions was not plain error.
Reasoning
Gomez objected at trial on hearsay and Rule 404(b) character-evidence grounds, but he did not object under Rule 403 on the ground of unfair prejudice. Federal Rule of Evidence 103(a)(1) requires a timely, specific objection, and an objection on the wrong ground does not preserve a different evidentiary theory for appeal. The trial court's grant of a continuing objection did not cure the omission because it extended only to the particular Rule 404(b) objection Gomez had made.
Because the Rule 403 claim was unpreserved, the court reviewed only for plain error: a highly prejudicial error affecting substantial rights. The court recognized the serious risk that a drug-courier profile might be used improperly as substantive proof that a defendant is guilty. Such profiles are investigative tools rather than evidence of guilt.
That risk was sufficiently reduced here because the government offered Inspector Espinoza's statements to explain how and why the other customs inspectors came to focus on Gomez, not to establish that profile characteristics proved Gomez possessed cocaine. The district judge twice instructed the jury that it could consider the testimony only as background bearing on the inspectors' state of mind and subsequent actions. The court presumed the jury followed those clear limiting instructions, so the ruling did not amount to plain error. The court expressly left open whether admitting similar background evidence over a properly preserved Rule 403 objection could be an abuse of discretion.