You are laboring under the dubious assumption that Trump gives any fucks about the US economy. (And that, even more dubious, that the real-life congress will manage more than bloviation on TikTok.)

This is a pure klept move. Who knows if he understands that the US manufacturing iPhones and cars-with-no-foreign-parts isn't possible in his lifetime (or most of ours), but regardless, he understands that this is his chance to finally get rich for real after all that cosplayin', and doesn't need to understand the rest.