https://www.eia.gov/energyexplained/us-energy-facts/imports-and-exports.php
https://www.ftc.gov/system/files/documents/reports/nixing-fix-ftc-report-congress-repair-restrictions/nixing_the_fix_report_final_5521_630pm-508_002.pdf
https://www.wto.org/english/res_e/booksp_e/wtr23_e/wtr23_e.pdf