Oh whoops, I must have misread and didn’t realize that you’d already redone the original Mexican divorce.
Yeah, I can’t see how you can satisfy the requirement of showing that you’re both legally able to marry, as your marriage to the UK husband was obviously legal.
Which one are you thinking of annulling? If the first marriage, the dates would still be problematic.
I think you’ll have to divorce and remarry the same person in order to satisfy USCIS, and then file for a spousal visa. Legal ability to marry and legal (non-bigamist) marriages are non-negotiable.