I have a suitor that is a good practising Muslim but my father does not want to give my hand in marriage due to tribal reasons. What is the Islamic solution for this problem?
Marriage in Islam is based on proper religion and good manners, and not on tribal or economic or any other worldly reason.
Your father might have his own cultural reasons for marriage which are not valid in Islam. You must be very polite with him and try your best to explain to him the teachings of the Prophet (SAWA) and AHLUL BAYT (AS).
You might need to seek assistance from people who are respected by your father to explain to him.
You might need to wait till your father is convinced.
You might also seek help from your mother to try to talk to convince him in nice way.
Wassalam.