The 2007 "motu proprio" "Summorum Pontificum" has authorized use of the 1962 Roman Missal by all Latin Rite priests as an extraordinary form of the Roman Rite without limit when celebrating Mass "without a congregation". Its use for Mass with a congregation is allowed with the permission of the priest in charge of a church for stable groups attached to this earlier form of the Roman Rite, provided that the priest using it is "qualified to do so and not juridically impeded" (as for instance by suspension).