Possible U.S. Return to Iran Nuclear Agreement: Frequently Asked Questions [January 29, 2021] [open pdf - 1MB]
From the Document: "President Joseph Biden and members of his Administration have expressed an intention to reverse various Trump Administration policies toward Iran, particularly the Trump Administration's decision to end its participation in the 2015 multilateral nuclear agreement known as the 'Joint Comprehensive Plan of Action' (JCPOA). This report provides background and analysis on the agreement, the conditions under which the United States might re-enter it, and potential legal, congressional, and regional implications. The JCPOA, which was finalized on July 14, 2015, by Iran and the United States and five other powers (Russia, China, the United Kingdom, France, and Germany), exchanged relief from international sanctions for restrictions on Iran's nuclear program."
CRS Report for Congress, R46663
Congressional Research Service: https://crsreports.congress.gov/