What are the most significant challenges concerning migration and the law of the sea?

This weeks reading discusses one of the most pressing challenges in global politics today: Migration. The extent of forced migration is growing exponentially . After viewing the lecture by Professor Godwin-Gill and reading the chapter in the e-book, what in your opinion is the biggest challenge when it comes to this crisis? Focus on the problems with the existing legal positions on the issue on both the international level and the U.S internal policies and laws.