There was a comment about being resident in Ukraine before a certain date think it was about a year ago.
However I have seen quite a few cases where the person was living elsewhere and sounds like she is still resident in Ukraine but has a temporary work visa elsewhere
You could have pulled the I 864 at anytime prior to the GC approval.
Anyway best option now is divorce and move on.
Seems that he is Cuban so not like he would be deported no matter what happens.
https://www.theguardian.com/us-news/2023/jan/31/us-mexico-border-aylum-seekers-biden-rule-change
this is an interesting read, asylum seems to have expanded its definition significantly.
https://www.cnbc.com/2023/01/28/reparations-owed-to-black-americans-william-darity-kirsten-mullen.html
Darity and Mullen told CNBC that the cost of reparations would not need to be passed on to taxpayers.