Casey began working with refugees in her hometown of Chapel Hill, NC, where she organized tutoring programs and summer camps for refugee youth. She has worked on refugee advocacy with Church World Service in Washington, D.C. and in case management with two resettlement agencies. She interned at the U.S. Department of State Bureau of Population, Refugees, and Migration at the Office of Refugee Admissions, where she served as acting Program Officer for Central America, Latin America and the Caribbean.