The Korean War proved wildly unpopular as well as Truman found out when he tried to run for president again in 52'.
I do think there would have been a public outcry if we weren't nuking the Soviets had we gone to war with them.
I guess we should be thankful we didn't have to find out!
Actually you make a good point. The Korean war is a good window with which to see how happy the American people were about a brutal land war after going through WWII.
And Korea is teeny compared to what we would have faced taking on the whole USSR.
That also despite Korea being very justified. It was a bald faced invasion of a place where American soldiers were the occupation force. That was not a war of convenience, and everyone still hated it.