Remember that a capital manages infrastructure and IPC’s are representative of production and infrastructure. Even in war soldiers are paid as are the people who build their weapons. If Washington fell tomorrow how many of us can just get together with the nieghbors and build a tank? Not to mention the only thing of yours that would have value is hard goods and equipment. I f the Chinese invaded tomorrow do you think Canadians or Mexicans would except US dollars for guns?
That’s why I think the money should go back to the bank, or as cruel twist of fate, the assests are frozen and given to the loser’s allies as if they were a government in exile.