overseer

英 ['əʊvəsɪə] 美['ovɚsɪr]

Some doctors see a potential conflict in trying to be both providers of patient care and financial overseers.

And interest groups ranging from postal unions to greeting-card makers exert self-interested pressure on the USPS's ultimate overseer-Congress-insisting that whatever else happens to the Postal Service, aspects of the status quo they depend on get protected.