You underestimate the economic effects greatly. We don't have the same kind of population we had during "The Great Depression."
We haven't stopped making paper. Most people are amazingly resilient once you get outside of the inner cities.
Would food production and shipment stop? No. Would electrical grids come back on line? Yes.
If it only took one nuke to destroy a civilization, we wouldn't have built 10,000 of them.
Bull$hit, America is great in spite of our fearless leaders, and will rise to ANY threat to our home land. You believe too much what you read on the internet.
BigMack