Alabama law: Can a convicted felon be appointed as a trustee for his mother's large estate?

This answer may vary from state to state——am especially concerned about alabama law. My brother has talked my mother into removing me from her estate (large amounts of land) and putting him on it alone. He is an alcoholic and has several alcohol related charges over the years. Even more, he has been convicted of a felony——trying to run over someone with his pickup truck (yes, I know, this doesn’t help our image in alabama, does it). My mother lives on a small teacher’s retirement (age 94) and if she has to go into a nursing home, she will need ALL of her estate, which will be dissipated if this goes through. HELP! What can I do?