I always wonder what gives them the right to keep your coins. What happens to those if they are not returned to you?
Coinbase and Xapo are known for keeping their users coin after freezing their account but haven't heard any similar case for poloniex till now. So if OP provide them all they want, there should be no issue to get back what he have deposited there.
You're correct. I see no reason why they won't release my coin. The issue I have is the ultimatum:
Passporn or Social Security number OR your crypto.
That trade-off is precisely why I got into crypto to avoid.