Honesty, I feel your husband is so selfish....first of all your mother is your mother and she will stay your mother for rest of your life no matter what....however, your husband is your husband now and he can be just an ex later on....by that I mean, he got to understand the unconditional love between a mother and a daughter....and the love that you have for him is just conditional....
and of course he has to come to your mother and ask for merci....he's the one who got to apologize I believe....
I understand exactly what you are coming from, because I'm an immigrant too and my parents are coming and visiting us....now my dad passed away, but mom was here just couple of months ago....there are lots of mis-communication between her and my brother-in-law....however, my brother-in-law who is American has never done or said anything rude to her....
I think it's very important to have the love of your family....I know how hard it is for you now....but stay strong and keep your relationship with your family....they are the ones that will love you very much....
take care
Marjan