Would it be wrong to tell my husband that I don't want his mother to visit anymore?
is anything wrong with her?
Not specifically but I know she's going to make us eat some foie gras which is too much for me.
You don't own your husband. You don't have any right to tell him if he can invite his mother at your place or not.
What if I don't like her and I know she's going to be horrible to have at my house?
Then you would be controlling your husband into doing what you want, and then your relationship would sour a little. Why not try getting along with his mother instead of attempting to force him to do something that he doesn't want to do?