Over time, the vast majority of people in Somali, Burmese, Hmong, and Bosnian refugee groups become citizens. Some groups start out with relatively few members becoming citizens after living in the United States for 10 years or less, due in part to the share who have not been in the country long enough to naturalize. By the time they have been in the United States for 11 years to 20 years, however, between two-thirds and three-quarters of each group have become naturalized U.S. citizens. Once in the United States for more than 20 years, more than three quarters of each group are naturalized citizens, with Burmese refugees having the highest rate at 92 percent.
David Dyssegaard Kallick with Silva Mathema: Refugee Integration in the United States. June 2016.