Labor Trafficking means that people are tricked into or actually abducted to perform work without being paid, underpaid, or as slaves. This is a serious issue. And as much as I hate the idea that fisherman might loose their livelihood, I don't think anyone who thinks of slavery or labor trafficking as serious should be eating these fish.
The investigation includes the fact that some of these people who are forced to labor are gone for a couple years at sea, their families do not know where they are, and they are desperately even sending messages in bottles to be freed.