UDP is based on IP, just like TCP.

When Trump dies, Musk will run for president, and the Republicans will endorse him.

It is a inbuilt limit that prevents (most of us) from doing harm to our fellow humans, and to shun from society those that do. It is the very core of why humanity has reached the modern society with a high quality of life.

The US has 4.2% of the world population. We can all just keep trading as we please. The US can buy from us if they want to pay the tariffs, or not, doesn’t really matter in the long run.