The US has a huge export market - over US$ 2 trillion, I believe.
With 'America-First' the dominant motif, it's not difficult to imagine that Trump wants to expand that market and make sure those importing nations do not consider any ideas that might affect its dominance.
A Senator, close to Trump, has warned the UK - among other countries, that any involvement with the ICC's bid to charge Netanyahu with war crimes will see that country's economy "crushed" with sanctions.
- although if you crush a nation's economy, surely it would affect the purchasing power of those who might buy American goods?
Anyway, I think Trump and Musk are high on victory, power and wealth, two egocentrics who see themselves as Kings-of-the-World, not just America... Batman and his Robin.
One of the reasons given by Brexit voters for leaving the EU was along the lines of not being told what to do by Brussels - we wanted to make our own decisions.
Was that a matter of principle? Or was it more to do with it being Brussels? Because some of those same people that championed that principle, are now loudly cheering for Trump and his right-wing cohorts.
If we are a sovereign nation then, surely, regardless of the issue - we make our own decisions? Or is that different because it's America / Trump attempting to tell us what to do?
I think Trump's plans - if they go according to plan... mass deportations, etc, are a bit like the bull in the china shop, and will have a similar effect.