You could make everything yourself, but only if you accept the enormous cost of doing so. Why? Because you don't have unlimited resources, labor, capital or infrastructure to make everything. Every dollar, worker and factory used to produce one thing cannot be used somewhere else.
Capitalist economics is based on production finding the best location to make things efficiently, given the resources, labor, infrastructure and supply chains available. That requires specialization and economies of scale. So if you want to move production to the US, you need to be selective about it. Find products that suit US resources, infrastructure and production chains, protect those industries where there is a genuine reason to do so, and attract investors to build the production capacity.
Take fishing rods or golf clubs from Canada. Even if producing them in Canada isn't much cheaper, the factories, workers, machinery and supply chains already exist. Moving that production to the US means spending a lot of money to recreate something that already exists. Investors need to know that the investment will actually make money and that the conditions will remain stable long enough for them to recover it. No serious investor is going to invest billions in production based on a policy that might disappear or change completely after the next election, or as soon as Trump drops dead.
And blanket tariffs can actually make American manufacturing more expensive,
because American manufacturers also depend on imported machinery, components
and raw materials.
So if you want to rebuild American manufacturing, do it strategically and give investors long-term certainty. If you impose blanket tariffs in this chaotic way, you're primarily making imports more expensive for Americans, while also making investment more uncertain. That's not the same thing as creating competitive American industry.
And ultimately, if your goal is an economy based on American production and American consumption, making American consumers poorer works against that goal. Higher prices reduce what Americans can afford to buy, which reduces domestic demand for American businesses. You are therefore raising the cost of producing goods in America while simultaneously weakening the American consumer who is supposed to buy them.
And if those higher consumer taxes are used to offset tax cuts that disproportionately benefit the wealthy, you are shifting purchasing power away from the majority of consumers, the very people your domestic economy depends on.
You want to teach me capitalist economics, when it is related to Mamdani, but you don't understand this: it doesn't matter how nice you are to the billionaires who make stuff
(in your vision), if you destroy the purchasing power of the people who BUY stuff.