 Ordained by Bishop James Timlin of Scranton on September 6, 1997, he has worked as both a pastor and as a seminary professor.Until his election to Superior General, Berg was chaplain of the Latin Mass Community of Sacramento, California.On July 7, 2007, the first anniversary of Berg's election as Superior General, Pope Benedict XVI issued the motu proprio "Summorum Pontificum", affirming that Latin Rite priests of the Catholic Church are free to use the 1962 Roman Missal both privately and, under certain conditions, publicly.