<page_title> List of the busiest airports in the United States </page_title> <section_title> 10 busiest airports in the US by total cargo throughput (2017) </section_title> <table> <cell> 1 <col_header> Rank </col_header> <col_header> Ibs. </col_header> </cell> <cell> MEM <col_header> IATA Code </col_header> </cell> </table>
MEM is the busiest cargo airport in the United States.