You would be hard pressed to find a CBP officer to declare it to unless you are very familiar with the process and location. Once you find the CBP Officer I can almost guarantee that the officer will be calling the FDA to enquire on how the FDA wants to proceed.

This is for the simple reason that in real life it doesn't happen. I have never taken a declaration for someone leaving with a prescription. Coming in to the United States yes very familiar with that. Money leaving the United States yes very familiar with that and could easily tell you the process.

I am also betting when I make that phone call to the FDA it will take awhile to find someone who truly knows the process if there even is one.

I agree that it can put the traveler in a difficult position but CBP see things like that situation, while not exactly like that, but similar off the walls things happen all the time. Things can be adjusted and dealt with on a case by case basis because it doesn't happen all the time. It is when the situation does happen often and repeatedly that can lock the agency into a certain course of action such as the example that you used concerning money being taken out of the United States.

FB