Tuhia he tohutoro mō tēnei wāhanga - I te mea he arikipihopa, he maha nga wa i tukuna a Hanna ki te awhina ki te whakatau i nga tautohetohe mahi. I te tau 1921, i whakaingoatia ia hei tiamana o nga Poari Whakawa Wage o San Francisco; I mahi a Hanna ki nga poari tae noa ki te tau 1924. I tohua e te Kawana a James Rolph a Hanna hei tiamana mo te poari takawaenga a te kawanatanga ki te whakatau i te patu miro 1933 i Corcoran, California. I te wā o te 1934 West Coast waterfront strike
I te tau kotahi mano, i whakaingoatia e te Perehitini Franklin Roosevelt a Archbishop Hanna hei tumuaki mo te Poari a te National Longshoremen. I whakawhiwhia te poari ki te whakatau i te patu ma te takawaenga i waenga i te International Longshoremen's Association, te International Seamen's Union, me o raatau kaituku mahi.