I'm not sure why this was downvoted, this is largely the right answer. The US has had troops all over the continent and the USSR was an external, existential th

I'm not sure why this was downvoted, this is largely the right answer. The US has had troops all over the continent and the USSR was an external, existential threat against which they were united. People weren't worried about their stock portfolio, they were worried about the Soviet Union nuking their cities.