Right now if the US wants to go to war with China, or anyone China really really likes, they can expect with high probability to very quickly encounter major problems getting the best chips. AIUI the world has other fab capacity that isn't in Taiwan, and some of it is even in the US, but they're all on much older processes. Some things it's not a problem that maybe you end up with an older 500MHz processor, but some things it's just a non-starter, like high-end AI.
Sibling commenters discussing profits are on the wrong track. Intel's 2024 revenue, not profits, was $53.1 billion. The Federal Government in 2024 spent $6,800 billion. No entity doing $1.8 trillion in 2024 in deficit spending gives a rat's ass about "profits". The US Federal government just spends what it wants to spend, it doesn't have any need to generate any sort of "profits" first. Thinking the Federal government cares about profits is being nowhere near cynical enough.