

The first reason is cost, and the same reason why the US continues to rely on importing uranium from Russia even to this day, more than 3 years since the war in Ukraine has started.
After the fall of the USSR, the Lisbon Protocol was signed which included Russia converting their highly enriched uranium from their massive nuclear arsenals (as part of the non-nuclear proliferation agreement) and blending them down into low-enriched uranium to be used as fuel for the nuclear power plants in the US.
Why invest in uranium extraction and processing when you’re practically getting it for free?
The second reason is the export of environmental pollution to the developing world.
You’d notice that the narrative now is that the Western world lost its supply chain and falling behind China because of the restrictive environmental policies that made it very expensive and hazardous to perform and to maintain such dirty extraction and processing work in their own countries.
It will be used as excuses to kill the environmental policies in Western countries, and perhaps the main reason behind this whole drama, to drive the narrative that “left-wing environmentalism is why you’re losing your jobs”.
It is simply a defense mechanism against mercantilism. The Western countries are forced to raise the prices because no country could possibly compete with China’s industries without driving down wages and production costs, which will undoubtedly destroy their own domestic industries in the process.
In the old days, after the Industrial Revolution, under free trade, the most industrialized nation with the most cost efficient productive capacity will be able to flood the competitor’s markets and kill off their domestic industries.
The most successful countries were the countries running trade surpluses, weaponizing mercantilistic warfare to destroy the trade revenues of their competitors.
It took two world wars to eliminate such excess industrial capacities in the West.
After the collapse of Bretton Woods in the 1970s, global trade was kept in a unique configuration where the US, whose currency is no longer tied to gold, is able to run persistent trade deficits in order to absorb the surplus industrial goods from the rest of the world, thereby balancing the excess industrial capacity of the world.
Such oversupply of industrial capacity was what allowed global commodities to remain relatively cheap over the past few decades, as surplus values were extracted from the Global South and in return, the consumption demand for such surplus capacity in the US keeps the workers employed and factories opened in those Global South economies.
The US finance capitalists are the true winners of this arrangement, as the de-industrialization killed off the growing trade union movements that accompanied the rise of the post-war industrial capitalism. However, the long term consequences of de-industrialization began to emerge in the 2010s, after the GFC in 2008 ended what remained of social mobility of the middle class, in the form of populism under the Sanders and Trump.
So what you’re really seeing, at its core, is the US attempting to transition away from the neoliberal arrangement that had worked so well for nearly half a century. The US knows that there is no way any Western country could possibly compete with Chinese industrial goods, so it is attempting to upend this trade relations by invoking global tariffs, which will reduce the consumption demand from the US, and thereby causing an excess of surplus capacity in the rest of the world.
If no other countries wants to run up their deficits to absorb such surplus capacity, then we will return to the old days of mercantilism. The EU market, once projected to overtake the US in the 2020s, is now dead in the water because of Ukraine. China also struggled to transition into domestic consumption after Covid.
The chaos created by the US tariffs thus has the potential to cause damage to many exporter economies as they desperately lower their costs (and wages) to compete China’s vastly superior and cost efficient productive capacity. The US can then pick off the failing economies by bailing them out, and reshapes the global supply chain through financial takeovers.