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Archbishop Christophe Pierre, apostolic nuncio to the United States, gives Communion during Mass at the international border in Nogales, Ariz., Oct. 23. Dioceses Without Borders, an effort of Mexico's Nogales Diocese and the U.S. dioceses of Phoenix and Tucson, Ariz., organized the liturgy celebrated on both sides of the U.S.-Mexico border. (CNS photo/Nancy Wiechec) See BORDER-MASS-PIERRE Oct. 24, 2016.