Agencies tend to serve the interest of those whom they are meant to be overseeing.
This 'clientelism' is seen as a particular problem with the regulatory commissions as these watchdogs often turn out to be lapdogs.
Special interests are protected at the expense of public interests.
Agencies are also accused of 'burreacratic imperialism' where they invariably seek to expand their powers and responsibilities at the expense of other agancies.
Political interests become paramount, sometimes regardless of public interest.
Imperialism sometimes manifests itself…