This paper explores the development of Canadian immigration legislation from the mid-Nineteenth Century to the present day. The aim is to show, through an historical lens, how people with disabilities have been and continue to be treated as inferior to nondisabled people when it comes to immigration. Similar to other minority populations, including people of colour, gays, lesbians, as well as people from ethnically and culturally diverse communities, people with disabilities have been assigned to the prohibited and inadmissible classes of various immigration acts. While significant legislative changes have been instituted to address immigration policies which were once racist, sexist, and/or homophobic, no similar changes have been made to address ableist immigration legislation. As a result, Canadian immigration legislation continues to deny or restrict immigration opportunities for people with disabilities, as case studies will attest. By developing this history, it is hoped that readers will address important questions about the ethics of the continued discrimination against potential immigrants with disabilities and the ethics of decision-making processes which devalue the lives of people with disabilities.