Nelson was the Local Superior of the SMA in Takoma Park, MD, and the Coordinator for the Justice, Peace, and Integrity of Creation for the SMA Fathers Province (January 2018 – December 2020). As Superior, Fr. He also coordinated the activities of the SMA Fathers in Ghana, Ivory Coast, Liberia, Sierra Leone and Togo; served as liaison between the SMA Fathers and the Dioceses in the afore-mentioned countries.