Opinions vary on the generalizability of empirically supported treatments to diverse populations in naturalistic settings and on the relative merits of delivering treatments through interpreters. The authors present statistical analyses of outcome data from a community mental health program that served foreign-born refugees resettled in the U.S. The program used a manualized, empirically supported treatment, Cognitive Processing Therapy, to address symptoms of PTSD in this population. Participants received psychological treatment in native languages either with a therapist who spoke their language or with a therapist who used an interpreter. Results demonstrated that treatment of PTSD was highly effective whether delivered directly or through an interpreter. (Contains 3 tables.)