Department of the Interior The preliminary concept of the BorderTransportationSystem has been presented to the U.S.A. Department of the Interior as a means of increasing visitors, both foreign and domestic, to the National Parks and Forest.  They appreciated the idea, but rejected it due to the Congress probably not funding the project.  What was not known by the DOI was that the BorderTransportationSystem is being designed to be 'self-supporting' by investors, corporate sponsors, and users of the system.  "The United States Department of the Interior (DOI) is the United States federal executive department of the U.S. government responsible for the management and conservation of most federal land and natural resources, and the administration of programs relating to Native American, Alaska Natives, Native Hawaiians, ..." Per Wikipedia Index of ... Department of the Interior U.S. Department of the Interior - Wikipedia