American Space Commerce Free Enterprise Act of 2019 This bill grants the Office of Space Commerce of the Department of Commerce the authority to issue certifications to U.S. nationals and nongovernmental entities for the operation of (1) specified human-made objects manufactured or assembled in outer space, including on the Moon and other celestial bodies, with or without human occupants, that were launched from Earth; and (2) all items carried on such objects that are intended for use in outer space. To be eligible for certification, each entity's application must include a space debris mitigation plan for the space objects. The office shall establish a Private Space Activity Advisory Committee to (1) analyze the status and recent developments of nongovernmental space activities, and (2) advise on matters relating to U.S. private sector activities in outer space. The bill authorizes the office to issue permits to persons for the operation of space-based remote sensing systems. The office shall establish an Advisory Committee on Commercial Remote Sensing to advise on matters relating to the U.S. commercial space-based remote sensing industry. The bill abolishes the Commercial Remote Sensing Regulatory Affairs Office of the National Oceanic and Atmospheric Administration. The Government Accountability Office must submit to Congress a report on the removal of the Office of Commercial Space Transportation from under the jurisdiction of the Federal Aviation Administration and reestablishing such office under the jurisdiction of the Department of Transportation.