MapBox Tiles on Apps.gov
MapBox has a special terms of service in place with the United States General Services Administration so that MapBox service can be easily procured for US federal .gov projects through Apps.gov. All that federal agencies who want to use MapBox tiles need to do to start the process is go to Apps.gov and enroll. (Direct links aren't supported, look under "Social Media Apps" >> "Display of Multimedia, Data, Maps")
