Fr. Stetson is a priest of the Prelature of Opus Dei ordained in 1962. He was appointed Director of the Catholic Information Center by His Eminence, Theodore Cardinal McCarrick in May 2004 after serving for several months as acting director. He succeeds Fr. C. John McCloskey who had been director since 1998. The operation of the Center has been entrusted to priests of the Prelature of Opus Dei since 1993.

Fr. Stetson is a graduate of Harvard College and Harvard Law School. He earned a doctorate in Canon Law from the Pontifical University of St. Thomas Aquinas (the Angelicum) in Rome and taught for several years on the faculty of Canon Law at the Opus Dei run Universidad de Navarra, where he also was involved in establishing the School of Liberal Art. He was the vicar of Opus Dei in Chicago for seventeen years, during which time priests of Prelature of Opus Dei were entrusted with operating a parish of the Archdiocese of Chicago, renovating one of its largest church buildings. Since 1983 he has also served as consultant and later secretary to the Ecclesiastical Delegate of the Congregation for the Doctrine of the Faith for the Pastoral Provision for former Episcopal priests, by means of which over seventy men have been ordained for service in the Roman Catholic Church.