In an Oct. 23 letter, Bishop William S. Skylstad, president of the U.S. Conference of Catholic Bishops, asked his fellow bishops to inform all pastors of the change, which was prompted by a letter from Cardinal Francis Arinze, prefect of the Vatican Congregation for Divine Worship and the Sacraments.
The committee document also suggested distribution of Communion by consecrated bread alone or by intinction when the number of communicants makes the purification of vessels by priests, deacons or instituted acolytes alone "pastorally problematic."In the United States, instituted acolytes, who must be male, generally are seminarians preparing for priesthood or men in formation for the permanent diaconate.
A little more information can be read at the USCCB (US Conference of Catholic Bishops website.