What problem?? If we need more money, we’ll just print it. We’ve got plenty of paper and ink.
Someone needs to develop a computer program that let’s us print our money as we need it. You know, like the stamps.com web site that prints the stamps on your computer printer. We could just log into the U.S. Bureau of Engraving and Printing web site [moneyfactory.gov] and print what we need on our own printers.