Driver became an active supporter of Haiti’s beleaguered democratic movement, working with Witness for Peace, for whom he chaired a Task Force on Haiti, leading numerous fact-finding delegations there between 1991 and 2004. Witness for Peace is a grassroots U.S. organization promoting peace, justice, and sustainable economies in the Americas, including the Caribbean. Witness for Peace also took Driver to Colombia in 2000, where he was the photographer for a documentary film entitled "Colombia, the Next Vietnam?" He returned to Colombia in 2003 with a delegation arranged by his wife, Anne Barstow, and sponsored by Witness for Peace and the Presbyterian Peace Fellowship. Once again, he photographed and edited a documentary film, this one known as "Colombians Speak Out about Violence and U.S. Policy". Like the first Colombia film, it was co-authored and narrated jointly with Anne Barstow. It was screened at the 2004 Mountaintop Human Rights Film Festival in Vermont. As an advocate of nonviolent action, as an alternative to war and militarism, Professor Driver edited and wrote the Introduction to a special issue of "Church and Society" in 2001, a journal published by the Presbyterian Church (USA) entitled "Rethinking War, Rethinking Peace, Making Peace". In 2005, in the wake of the disclosure of the use of torture by American military personnel at the Abu Ghraib prison in Iraq, he helped write “What's at Stake in Torture? Ritual, Imagination, and the Role of Media in the Construction of State Power.” In 2011, after living 61 years in New York City, Driver moved with his wife to a retirement community in New Jersey. There, in 2017, he became the founding chairperson of Senior Advocates for Justice, a politically active group in resistance to the Presidential administration that began that year. He drafted the group’s "Dream for America". Driver continues to write, lecture, and preach. Driver’s papers and photos are archived at the Burke Library of Union Theological Seminary in New York; see the Finding Aid.    1958 "The Invisible Fire". Libretto for oratorio, with music by Cecil Effinger. New York: H.W. Gray Co.  1960 "". New York: Columbia University Press. Paperback edition, 1967.  1964 "Poems of Doubt and Belief: An Anthology of Modern Religious Poetry". Co-edited with Robert Pack New York: Macmillan Co.  1966 "".