President Donald Trump has, once again, dusted off his favourite economic weapon: tariffs. Steel and aluminium imports now face a 50% duty, up from a mere 25%, in what the administration insists is a patriotic move to “support domestic manufacturers” and not, of course, an electoral gambit disguised as an economic strategy.

The move was justified under the ever-convenient banner of national security. According to the order signed Tuesday, previous tariffs “have not yet enabled domestic industries to achieve the capacity utilisation rates needed for long-term health and national defence requirements.” One assumes that doubling the rate will sort that out – or at least make headlines.

This latest escalation lands just as the US remains locked in tortuous “reciprocal” trade negotiations with allies – a term which here seems to mean “agree with us or face tariffs.” With a 9 July deadline looming and previous tariffs slapped down by US federal courts, Trump appears determined to prove there are many legal paths to unilateralism – all of which lead through the Oval Office.
Interestingly, the United Kingdom has been granted a reprieve, keeping its steel tariffs at the original 25%. At the same time, both sides hash out a new deal or possibly kick the can until after the US elections. Mexico, meanwhile, is scrambling to secure its own exemption from what its economy minister called an “unsustainable” hike. One can only imagine the diplomatic delicacy with which those discussions are unfolding.

Trump’s announcement came during a self-congratulatory stop at a United States Steel Corp. plant in Pennsylvania, where he endorsed the firm’s controversial sale to Japan’s Nippon Steel – assuring his audience that the company would remain under “some form of American control.” Presumably, that means symbolic ownership rather than actual operational authority.
“No one will steal your industry,” he declared to a crowd of steelworkers before explaining that at 25%, importers can “sort of climb over the wall” – but at 50%, the wall is too high. One imagines this logic would make Hadrian proud.

Aluminium, too, will see a matching 50% tariff – because consistency is key, especially when escalating trade tensions for political points.
In the meantime, markets brace for rising domestic metal prices, allies fume, and trade negotiators double their supply of aspirin. But rest assured: it’s all in the name of national security.