<page_title> List of members of the United States Congress by longevity of service </page_title> <section_title> Combined U.S. House and Senate time </section_title> <table> <cell> John W. McCormack (H) <col_header> Name </col_header> </cell> <cell> 42 years, 58 days <col_header> Uninter­rupted tenure </col_header> </cell> </table>
McCormack had an uninterrupted tenure of 42 years and 58 days.