[hn8305823]

Yes, they would tolerate it. Both because of the Government's monopoly on violence, and because citizens always rally to support a war when under direct attack. The latter effect was popularized by Randolph Bourne in an essay https://en.wikipedia.org/wiki/Randolph_Bourne

> the phrase "war is the health of the state" that laments the success of governments in arrogating authority and resources during conflicts.

The problem the US might have in full war mobilization today would be due to cronyism. Remember all of the exceptions to Covid lockdowns for "essential" employees? Some of that is of course necessary but I suspect it would be very widespread if it happened today. This would stoke resentment from people/companies not so privileged.