Seriously, stop laughing.
Now assuming that some earnest young Congressman did not quickly find a use for it, what would happen, if after a particularly good year the US government paid for everything in the budget, cleared all of its debts, interest included, and found a coupl’a million left over?
Or would they have to spend it? Is there some bank account for the USA that the money could go into? Would it just sit in neat pile in the treasury somewhere? Has this, an unclaimed surplus, ever happened before?