Tuhia tētahi tohutoro mō tēnei wāhanga - I haere a Mangano ki te Kura Tuarua Whakaakoranga, New York Prep, me te Whare Wānanga o St. John. He mema ia o Phi Sigma Chi me te Karapu o te Kaimahi. I te tīmatanga i haere ia ki te mahi i te whare tangihanga o tōna pāpā. I te tau 1934, i pootihia ia ki te New York State Assembly hei Democrat, e tohu ana i te rohe 8 o Kings County. I mahi ia i roto i te Runanga i te 1935, 1936, me te 1937. Ko ia te kaitono whakakapi i te 1936 Democratic National Convention, a ka mahi hei kaitono mo te 1940, 1956
, 1960, me te 1964 Democratic National Conventions. I te tau 1937, i pootihia ia hei Kaitiaki o Kings County. I mahi ia hei Sheriff mai i te 1938 ki te 1941. I te tau 1941, i pootihia ia hei mema o te Komiti Manapori o New York State. I te 1942, i whakakorea te tūranga o te Kaitiaki o te Rohe o Kings, ka whakakapia ki tetahi kaitiaki kotahi, o te taone nui, ka waiho ia hei Kaitiaki whakamutunga o te Rohe o Kings.