I’m sure you had a good heart on this one. But you actually hurt yourself because you allowed the petition to proceed even though you knew that you were no longer married. He got his green card through a sham marriage that you were part of.
Did you also know that you’re on the hook for the I-864 until he becomes a citizen, works 40 quarters, or naturalizes?
This is bigamy in the US. In a lot of States it is a crime.
forget About k1. That ship has sailed. You’re too married.
Firdt of all, most visit visas are denied, especially to a man of a marriage age from Syria. That in and of itself is a factor. The other factor against your case is that he’s married to a USC. So, he’s not going to get one. But even if he did, coming to the US with a visit visa with the intent of adjusting status is fraud. Don’t do it. That would definitely, definitely complicate your case even more.
I think this is a Jim Hacking question.