Bernard Zimmermann asks:
Before 1 January 2023, will the US officially rejoin the JCPOA?
Obstacles standing in the way of the US rejoining the Joint Comprehensive Plan of Action (JCPOA) include the issues of current US sanctions against Iran and Iran's resumed production of highly enriched uranium (Council on Foreign Relations, Radio Free Europe/Radio Liberty, Arms Control Association, Congressional Research Service). The US rejoining the JCPOA under revised terms would count.
NOTE 18 February 2022: If an agreement for the US to officially rejoin the JCPOA is contingent on Senate or congressional approval, the US would not be considered to have officially rejoined unless and until that contingency were fulfilled.