Tuhia he tohutoro mō tēnei rārangi - I te wā i neke atu ai a Willis ki Texas i te tau 1948, i te wā i marena hou ai, i mahi ia mō te pakanga a Lyndon B. Johnson ki te senate. I mahi hei kaitono ki te Democratic National Convention i te tau 1956, 1960, me te 1968
, ka noho ia hei hoa me te kaitohutohu ki a Peresideni Johnson.