These kinds of selfish policies backfire when they cut the ground out from under you. Trump and his cronies live in the US and are predominantly invested there,

These kinds of selfish policies backfire when they cut the ground out from under you. Trump and his cronies live in the US and are predominantly invested there, and undermining the US in the long term also undermines them and their interests. The stability of the US correlates with the stability of their power, I would consider this to be basic systems-thinking on the scale of a nation.