Oanh Ngo Usadi discusses her heartrending and funny memoir, “Of Monkey Bridges and Bánh Mì Sandwiches: from Saigon to Texas,” with host Carol Castiel and Minh Dao, Editor in VOA’s Vietnamese Service. Ngo Usadi writes poignantly about her life before and after the fall of Saigon to the communist north, from the Mekong Delta to refugee camps in Malaysia and the Philippines, to her ultimate resettlement as an immigrant in the small Texas town of Port Arthur.