U.S. Sanctions against Iran: Background and Possible Consequences

... turning the requirement for regular certification into a tool for bargaining and ultimately a mechanism for withdrawing from the JCPOA altogether. In other words, he was essentially able to share responsibility for the decision with Congress. For its part,... ... Congress made efforts to unilaterally strengthen the U.S. sanctions. On August 2, 2017, Donald Trump signed Public Law PL 115-44 (CAATSA), which set forth a range of sanctions against Iran. The law stated in no uncertain terms that Iran remained a serious ...