Then again, even if they don't want to reimburse it, they are legally obligated to do such seeing that the US government is watching their every step.
Is the US government really watching every step of Bitfinex? They did their best to no longer be subjected to US authorities by no longer allowing US citizens to register and use that platform.
If the US government did care, they would at least dig into what's happening over at Tether, because their stable coin is listed on multiple regulated exchanges and has been accused of not having enough fiat in reserves.
that's exactly what they've been doing. the CFTC and DOJ are both investigating tether and bitfinex for market manipulation:
the CFTC investigation goes all the way back to december 2017 and is presumably still active. now that the DOJ has been involved for several months i won't be surprised to see criminal enforcement actions and bank seizures against them, and maybe a takedown of their domains too.