Government film agencies tend to be built around the need to invest money in production and training to help foster the growth of local film industries. Because USA enjoys a dominant position in global media production, there are virtually no government film agencies which offer the kind of support found in other countries. The burden of funding productions and providing training tends to fall either on the private sector, or on private non-profit organisations.
The few government agencies which do exist mainly focus on providing location and resourcing expertise to help encourage film productions to be shot in their state or county, thereby allowing the community to enjoy the financial benefits of having a large amount of money spent through local businesses.
For a comprehensive list of American film commissions, visit the web site of the Association of Film Commissioners International.