Sufficient evidence for a courier's conviction for counterfeiting conspiracy under the prudent smuggler doctrine where the prosecution demonstrates a plenitude of contacts among the organization, the courier evinces an awareness of the unlawful nature of the operation, and the courier's actions are critical to the success of the operation.
http://media.ca11.uscourts.gov/opinions/pub/files/201710509.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.