1) your brother can execute POA in favour of any relative .
2) since your brother is in USA forward the draft of POA to him . POA has to be attested by the Indian Consulate abroad Details of getting documents attested at Indian Consulates abroad is available on their respective websites.
3) once POA is received the holder of POA will have to submit it for registration purposes in bhilai
4) deed of family settlement can be entered into between you and your brother through his POA . have it duly stamped and regd