i found this on the nwifc website,

How are tribal fisheries enforced?

A responsible treaty fishery is important to good salmon management and to the spirit of tribal fishing. Law enforcement is a part of that. If a tribal enforcement officer finds a tribal fisherman fishing in violation of tribal regulations, he is obligated to issue a citation or warning. If a citation is issued, the case is referred to tribal court. Fishermen found in violation of tribal regulations are subject to fines and/or loss of fishing privileges. Uniformed tribal fisheries officers on Washington rivers provide a much-needed enforcement presence, particularly with a decrease in state enforcement due to budget shortfalls. On many rivers, tribal enforcement officers outnumber state officers.