Madness. Utter and complete madness. And you know why it's madness.
I got news for you: military/security matters are a fraction of the US-Western alliance. Want to know when America will lose, and lose often? When instead of America+the EU tag teaming in places like the WTO or international institutions, it's the EU and China, bound by the New Silk Road, that does it at our expense.
What's with you and national strategic suicide Berengil? America is 5% the world's population, 26% of it's economy. The only way we project power and protect our interests globally, in this global civilization we're part of, is by teaming up with partners.... partners you (very foolishly) do not value.
Without them, we're a richer Brazil. Your entire foreign policy thought process takes the US back to where it was pre-World War I... being the weird uncle on the other side of the ocean that's a rounding error, victim of decisions made in rooms we're not invited into.