Closing the Homework Gap Through Mobile Hotspots Act This bill requires the National Telecommunications and Information Administration (NTIA) to establish the Mobile Hotspot Grant Program. Under the program, the NTIA may provide grants to eligible institutions (e.g., elementary and secondary schools, universities, Indian Tribes, or libraries) to facilitate a mobile hotspot program that provides students with a portable hotspot device for connecting to the internet. The NTIA shall prioritize institutions that will provide hotspots to the highest number of low-income students and, to the extent practicable, shall disburse at least 5% of grant funds to Indian Tribes and 5% to U.S. territories and the District of Columbia.