Ka kammala wannan magana: Bayan yaƙin, O'Hara ya sauke karatu daga Jami'ar Michigan a shekara ta 1954 kuma daga sashen shari'a na wannan jami'ar a shekara ta 1955. An shigar da shi zuwa bar a 1955 kuma ya fara aikin doka a Detroit da Macomb County. Ya kasance wakili ne a majalisun majalisa na Democratic a 1960 da kuma
A shekara ta 1968.