<h1>Trade retaliation proposed: targeted countermeasures against specific US sectors and exclusion of US firms from federal procurement.</h1> Proposed trade retaliation would use a publicly identified 'retaliation list' of targeted foreign goods to implement dollar-for-dollar reciprocal measures against specific industries, paired with a domestic prohibition on American firms bidding for federal procurement (excluding defence) and coordinated international responses; energy export restrictions are signalled as a potential contingent tool.