The transition of leadership in the United States and the 1-year anniversary of the Joint Comprehensive Plan of Action (JCPOA)’s implementation day served as the impetus for this new study. It is the latest in a series of Center for International and Security Studies at Maryland (CISSM) studies of Iranian and American attitudes about Iran’s nuclear program, the negotiations that led to the nuclear deal, and other facets of the countries’ economic and security policies. Data for this study was collected in mid-December 2016, after the election of U.S. President Donald Trump.