Do you think this is right?

Well to make a long story short I am in war and will be forever with all my husbands family. They never accepted me because I am american and they are mexicans. My husband and I moved temp to Mexico for a couple of years and throughout this time they had made my marriage almost impossible. We have a 18 month old boy. Throughout these 2 yrs my husband will go to his ranch and leave me at home alone and take the baby with him. Not always but sometimes. It really upsets me and I feel sad. Thank god this crap is done because we are moving back to USA next week. Tomorrow there is going to be a big family party just like there was last weekend. for fathers day and both of them left me alone. I dont know if I should put my foot down and tell my husband enough is enough and he is leaving my son or if I should let him take baby because this will be last time. In a way I want to throw it in their faces that this is how things will be from now on and its MY son but I just dont know. Please give me some feedback. Thanks