I wonder what the consequences would be for the U.S. of completely stopping all foreign military operations. It's probably a given that other big powers would

I wonder what the consequences would be for the U.S. of completely stopping all foreign military operations. It's probably a given that other big powers would step in to fill the vacuum. But other than oil what kind of resources would the U.S. lose access to? And how would that manifest in the economy / supply chains?