Don't we want less global trade to save the environment? More local manufacturing reduces the carbon footprint of literally everything.

It just seems like no matter the ideological angle you come from it's beneficial, and it's something I always use as a major benefit of preventing offshoring production to the third world.

Shipping containers are just so inefficient compared to transporting raw materials as you can fill it to the brim when transporting ore for example. There's a reason vessels transporting shipping containers are stacked so damned high and are so big.