This past week, the US Department of State announced the creation of a new office that “will focus on engagement with faith-based organizations and religious institutions around the world to strengthen US development and diplomacy and advance America’s interests and values.” Citing widespread religious persecution and violence overseas, proponents of the new office of "religious engagement" hope to further institutionalize an official US commitment to globalize religious freedom, marginalize extremism, and promote interfaith dialogue and religious tolerance. Yet this initiative also raises concerns regarding the intersection of religious freedom, religious establishment, and foreign policy.What are the prospects for the new office, and what are the potential implications of its efforts for the politics of religious diversity, both locally and transnationally? What assumptions about “religion” underlie these efforts, and what are the implications for civil society, including organizations and associations that do not self-identify as religious?