I think it's about reducing the impact of outside market forces on the US, and increasing its sovereignty in the long term, and potentially laying the groundwork for a white ethnostate that doesn't rely on immigration. The globalised world is going to be crippled by climate change, mass climate immigration, demographic instability and food security.
This avoids the demographic and, depending on your perspective cultural challenges that are coming for many countries in the future, and lets America march to its own beat. America is setting up to be a fortress and a world unto itself in an unstable world. While a lot of countries will be going through these issues in the future America is doing its hard yards now.
Still years of economic misfortune ahead in the meantime.
So basically, integrating and supporting different cultures within one country is doomed? Better to be a closed ethnostate?
That's not my thinking but it aligns with his practice, especially considering his buddy's interesting hand gestures. Caucasian people are set to become a minority in a lot of their traditional countries pretty soon, and race is potentially going to become extremely heated imo to the point of constant brazen violence. I'm most worried about what he's using all this tarrif(tax) revenue for in the proposed sovereign wealth fund.