This document was developed by the Committee on Migration of the United States Conferences of Catholic Bishops ( USCCB) in collaboration with the conference del Episcopado Mexicano (CEM). It was approved by the full bodies of U.S Catholic bishops and the Mexican bishops at their November 2002 General Meetings and has been authorized for Publication in the United States by Msgr. William P. Fay, the General Secretary for USCCB.