All nonsense about Illuminati, I understand the ideological opposition to globalism. The very idea that we will stop worrying about the world's problems so much and start focusing on America's people more is a great sentiment that really resonates with people. From a purely ideological perspective, I agree with it. If I am being honest, starving kids in Africa and Syrians blowing each other up doesn't really care enough to want to do something about it. Maybe that makes me a bad person, but whatever. I don't fault an American for putting America first, nor do I fault a person who wants to use their resources to address a global problem.
The issue is that when you really get into the things that matter in each person's life, globalism really does matter. Trade agreements with China matter when your cell phones and computers are produced there. They matter when the steel used to build US tanks comes from China too. Things like OPEC and its influence matters when they could collectively raise the price of oil (fortunately, that no longer seems to be the case, as crude prices didn't raise when OPEC said that their prices would; prices only raised when US oil companies decided to raise crude rates). At the end of the day, we live in a world of networked economies, military treaties, trade agreements, and other things that have a big impact on American consumers and producers alike. Being an isolationist isn't focusing your efforts on your own problems in today's world; it is merely equivalent to putting your head into the sand while the rest of the world keeps turning. When you finally decide to pick your head out of the sand, you'll see the Chinese, Russians, and others have encroached upon your old territory, so you've got to work twice as hard to undo the work that they've done. I wish that more people understood this so that we could have a reasonable discussion about how to navigate in this decentralized world instead of opposing the very notion of it.