As the other articles in this roundtable suggest, Catholics in the United States in the second half of the twentieth century were able to draw upon a long tradition of lay involvement in various lay apostolates, the renewed teaching on the role of the laity proclaimed at the Second Vatican Council, and the worldwide presence of forms of international lay organizations, including Pax Romana and Catholic student movements. Additional contributions to this discussion could easily include some of the other official and institutionalized forms of lay involvement that proliferated in the twentieth century—the rise of various new ecclesial movements such as Opus Dei, Focolare, and the Communità Sant'Egidio; the Catholic Family movement and other forms of lay-led renewal at the national and parish level that pursued the conciliar vision of the universal call to holiness with enthusiasm and persistence; the entry of thousands of laypeople into ministries and teaching roles previously restricted, in practice if not always in statute, to the ordained and to members of religious communities; and the particular roles of lay Catholics with historically oppressed or marginalized racial and ethnic identities in finding a voice in postconciliar Catholicism.