http://www.usccb.org/liturgy/pubguidelines.pdf
Page 18
Regarding the use of Spanish, the National Conference of Catholic Bishops, at its November
2000 meeting, authorized that in the future, translations of Sacred Scripture in Spanish language
liturgical books for the dioceses of the United States of America be taken from the translation
employed by the Mexican Lectionary for Mass. A Leccionario for use in the dioceses of the
United States of America is in preparation. Publishers should consult the Secretariat of Divine
Worship concerning various approved liturgical translations in languages other than English.