The number 1 reason we need manufacturing again is to become a nation of thrift instead of the nation of squandering. The US needs to become productive again...to produce more than we consume like we did BEFORE WW2. And the only legal and moral way to do that is to produce more goods than we consume which requires a local manufacturing base to do this.
The basic problem here is the trade deficit doesn't show the true picture. The thing is we tend to import goods and export services--and since services aren't a thing they don't get counted as an export.
Of course services are counted toward GDP. Even government spending is counted toward GDP which it shouldn't and wasn't in the past when measurements were honest.
Considering Warren Buffet's success understanding money and his honesty, I'm inclined to believe what he is saying about this subject. Buffet is not the only billionaire saying this either, Ray Dalio (another billionaire) tells exactly the same story with the US. Our nation can NOT continue to consume more than it produces. Because the squandering of existing infrastructure, education, and production is the recipe for poverty and 3rd world status.
Either we need to drastically lower what we consume or we need to start producing more. Right here in the US.