He makes my mom always feel she's to blame. He has isolated my mother from the rest of the family. He tells everyone he takes care of her when he doesn't. Hasn't paid rent years. I've tried to talk to him numerous times I feel like I should evict him and report abuse.
Are you hesitating because you know the responsibility for Mom’s care will fall on you? Your hesitation to report him indicates you are or this would already be a done deal. Make quick plans about Mom’s care when Brother is out of the picture. Can she stay with you for a time? Can she stay in her home with caregivers? Should you apply for Medicaid Nursing Home Care? Who has POA? If no one, consult an Elder Law Attorney and have one drawn up.
Brother isn’t going to have an epiphany and all of the sudden start being nice to Mom, taking care of her and paying rent simply because you “talk to him”. He needs to be gone from the picture for Mom’s health and safety.
So, why wouldn't you do that? I'm not criticising, just wondering what is making you hesitate.
They may remove her faster than him.
get together with your family members and make a group complaint (?)
If he wont talk to you and he is isolating her from family - step up and step in quick.