If you're interested in a really long-range perspective:

Back in the Great Depression, folks got into the habit of fixing their own things because money was tight. That gave birth to a huge DIY culture. But it also gave birth to a huge number of people who had essentially trained themselves into becoming good with machines. So in the 1940s [WW2], '50s and '60s, there was a huge pool of workers who were skilled labour because they had trained themselves to be so. Not just the folks who had to slog through the Great Depression, but also the kids who put together go-karts, jalopies, radios, etc. in their backyards, shop classes, rooms, etc. After that great self-education, America had a great labour force perfectly times for the post-WW2 era.

This "long tail" of self-trained skilled workers made America great again after it was humbled by the Great Depression.

So: how to make America great again now? What better long-term framework than the same one that did work to get America on top after the G.D.?

This time 'round, it's computers and tech. Today's answer to the "Go-Kart" is the Raspberry Pi. Pis are already being used for the Internet of Things.

That's the long-range way to make America great again: chivvy every kid you know to get a Raspberry Pi and knock around with it. It's the "jalopy" of today! As with the last wave of DIYing, it'll take years to see any effect on the economy. But once those years are over...

...everyone will see that America made great again by America getting back to its DIY roots.