Except as provided in subsection (b) of this section, any unenhanced data generated by the Landsat system or any other land remote sensing system funded and owned by the United States Government shall be made available to all users without preference, bias, or any other special arrangement (except on the basis of national security concerns pursuant to section
5656 of this title) regarding delivery, format, pricing, or technical considerations which would favor one customer or class of customers over another.