A bill to terminate certain waivers of sanctions with respect to Iran issued in connection with the Joint Comprehensive Plan of Action, and for other purposes.

This bill (S 256) terminates existing U.S. sanctions waivers that permitted specific nuclear activities in Iran under the 2015 Iran nuclear deal (JCPOA). It ends exemptions for activities like modernizing Iran's Arak reactor, modifying centrifuges at Fordow, operating the Bushehr nuclear plant, and transferring uranium or heavy water. The bill takes effect upon enactment, prohibiting the President from issuing new waivers for these activities. It directly affects Iran's nuclear program by reinstating sanctions on these specific cooperation areas. The legislation targets the JCPOA-related waivers, not broader sanctions.