Long term and stable support through various targeted subsidies. Biden did this for some manufacturing industries and we're already seeing results with increased production and private investment that far outpaces the public investment that kicked it off. One key issue is that these industries and the supporting resources and expertise take a long time to develop so the support needs to be consistent. Blowing up trade deals and flip flopping around on tariffs every few weeks is the opposite of what will help. Trump talked a big game on manufacturing his last term but accomplished absolutely nothing; I expect this term to be worse.
There would probably be near zero electronics and machine manufacturing in the US without military spending. I really cannot emphasize enough how many shops out there are kept alive by military contracts stipulating domestic manufacturing.
This is also why the defense budget never gets cut, by dems or repubilicans. It's the backstop for a gazillion jobs and domestic manufacturing capability.
As much as I dislike the US' militaristic identity and especially its foreign policy, and would like nothing more than to slash the military budget in half and use it for something beneficial, when it comes to the economic benefits of the military-industrial complex, you're absolutely right.
