... The reason for this is because the FDA won't know who still has it and who discarded it or gave it to someone else.
Doesn't matter. If you're the importer of record, you're the one liable - period. If you got rid of it or sold it, to the government, all that means is you've potentially committed another bad on top of your illegal import - selling a noncompliant laser within the US. If you discarded or destroyed it they'd probably need proof, or you'd still be on the hook.
Having your name on the shipping information might say you bought and imported the laser which would constitute probable cause for ownership, but that doesn't mean you still have it, and there is no probable cause to suggest you do.
The violation isn't owning it or still having it. It's importing it. And you don't need to still have it, to have imported it illegally. So having your name on a list is certainly probable cause for importing it --- it's evidence, in fact.
If an FDA agent or a law enforcement official on behalf of the FDA showed at your doorstep, you don't have to say or do anything for them if they don't have a search warrant. If they do have a warrant, they can only search in the place(s) listed and seize exactly what is listed.
Again, true if they were trying to find the laser itself and were going to get you on 'posession' -- but that's not the crime. The crime is the act of having it shipped in, and the laser doesn't have to be found, for that to be proven.
Again I'm not saying it should happen or will happen. Just clarifying what the issue actually is. If you got it given to you as a gift, if someone else ordered it for you -- they're likely on the hook and you're in the clear even if you have the laser.
This is getting a bit "what if", I agree, but these are the issues at stake. It depends on what the FDA's end goal is. Right now, they've got issue with Wicked, and are trying to stop them from selling to the US, by interrupting (siezing) their shipments.
If they wanted to make an "example to the public" to stop importation attempts, then they could go after a few importers (buyers) and string them up. I don't think we know if this is what the FDA wants to do.
If you look around on the forum here, there have been one or two situations where someone imported a Chinese laser, and the FDA demanded the laser back after the person received it. I *believe* this was a laser from Wicked. Pictures of the letter were posted and everything. After the person had the laser in his possession for a while, the FDA sent him a form laser giving him two options, which were essentially "provide us with compliance documents or send the laser back to us -- you get nothing except a hard lesson." He handed over the laser.
You also may want to talk to Mohrenberg who had first person dealings with the FDA. And I know there were others. It has happened.