It is easy to stop this human trafficking.  DLNR makes a rule to stop issuing fishing licenses to people who are not allowed to legally enter Hawai'i.

Problem solved.

DLNR can also stop allowing trafficked people to be "detained on board" by refusing to accept any deportation orders that have that box checked instead of the other two boxes that say either "Deport immediately" or "Bring in for a deportation hearing immediately"

This 3rd checkbox that says "Detain on Board" might as well be reworded to say, "Keep as a slave".