What do you do when your husband doesn’t respect your boundary?

I asked my husband not to tell his mother our new home address because I don’t want to worry about his mother showing up at our house uninvited. She doesn’t respect my boundaries, and worse, she always tries to make sure to do things that she knows I wouldn’t be okay with. And my husband is a mama’s boy who can’t stand up for me. It’s been like this for 13 years. And no, I don’t want a divorce. I want him to stand up for me and protect me by at least respecting my boundaries.