Worshipers come to St. Mary, Mother of God in downtown Washington, D.C., for various reasons, but many say that a big draw is the Tridentine Latin mass that is said here every Sunday. Soon, St. Mary may be less well known for that distinctive liturgical offering than for the number of big-name government and media types that occupy its pews. Now that Pope Benedict XVI has loosened the restrictions on churches that want to observe the pre-Vatican II rite, more parishes are availing themselves of the option. Call it part of a larger conservative shift within the church—one that includes a renewed emphasis on such practices as personal confession and reciting the rosary as well as a resurgent interest in traditional monastic and religious orders.