Has US foreign policy since WWII been primarily driven by domestic economic concerns?
No. US foreign policy, as well as most countries’ foreign policies, have ALWAYS been driven by domestic economic concerns. To be brief, just two examples: Revolutionary War – We were being taxed to death by a King trying to pay for numerous wars with France, and our natural resources were being shipped to England at the expense of local needs. War of 1812: Due to yet another European war, our ships were being intercepted and kept from performing their vital function, US commerce and trade.