Gregory will be "a hard act to follow" in Belleville

The process itself is begun by the pope's representative to the United States, called the apostolic nuncio, the day a bishop's seat is vacated. The nuncio, Archbishop Gabriel Montalvo, will collect names in the same geographical region, and then begin to look outside the region.

The Rev. Thomas Reese, editor of America magazine, said Montalvo would put a lot of stock in who Gregory, St. Louis Archbishop Raymond Burke and Cardinal Francis George of Chicago recommend for Belleville.

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