To amend the Energy Policy Act of 2005 to include American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, Puerto Rico, and the Virgin Islands in certain efforts to reduce diesel emissions.

Amends the Energy Policy Act of 2005 to: (1) make states (including American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the Virgin Islands) that represent or provide pollution reduction or educational services to persons or organizations that own or operate diesel fleets, or that have the promotion of transportation or air quality as their principal purpose, eligible for grants and loans for diesel emission reductions; and (2) require the Administrator of the Environmental Protection Agency (EPA) to allocate to American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the Virgin Islands funding for a grant and loan program that is designed to achieve significant reductions in diesel emissions if such states have an approved application for such program.