Designates a set of Iraqi militias and Iran-linked groups as foreign terrorist organizations, requires interagency strategies and reports to map and counter Iranian influence in Iraq, and blocks U.S. federal funding and security assistance to militias and—unless waived under strict conditions—to the Iraqi federal government. It also requires Treasury sanctions on named Iraqi and Iranian actors and forbids Iraq (and Iraqi entities) from importing Iranian liquefied natural gas, with enforcement via sanctions and regular reviews.