Which instantly collapses the load bearing bull market. They can't do that for the same reason they can't do anything about the insanity of the real estate market. The fallout would be existential. The economy isn't rational, remember. It's highly reactive and, no matter how strong your state is, always out of your control at the end of the day.
America is years away from being able to rotate meaningful volumes of capital into heavy industry. Until then, AI has to outpace the cooling of the tech sector, while also contributing to it. The entire political strategy in play is a frantic spinning plate game. There is no long run if it fails, so that is their strategy as far as we can see. Or maybe they're just maliciously incompetent. Given the American administration opaquely decided starting a forever war in the Red Sea was a solid choice at this point in time, possibly to try and fluff up an auxilliary bull market with the MIC, we really can't rule that one out.