My mother in law is so bizarre. She always supports my husband even when it's obvious he's wrong and it makes me feel like the outsider in the family. It's very very frustrating and humiliating. What can I do?

Sighhhh isn't this a common problem everywhere. But then again, which parent won't side their child no matter how bad they are. If the tables are turned, your mom will support you no matter what, I reckon. That being said, in situations like this, best to just let it go and walk away if it's just small matters. Don't pick a fight with MIL, instead have a talk with your husband in private and confront him about his mistakes.