In accordance with US law, spouses of US citizens are granted permanent residence. Unfortunately, this is the basis for numerous investigations related to marriage. As a result of such investigations, many non-US citizens were deported.
Perhaps in this case it was a marriage of love. But as their marriage was falling, there are all reasons to call it a *****. I recommend you contact a lawyer as soon as possible. There is a good immigration ***** lawyer https://www.nycriminallawyers.com/practice-area/nyc-immigration-*****-lawyers/
. Do not hesitate with this, because the penalties for an immigration ***** are very strict in the USA.