This is a ridiculous process. The US has the authority to issue money. If it issued money, it wouldn't have to pay interest or even repay it. Yet instead, the government has been borrowing money from the Fed. Where does the Fed get the money to lend to the government? It just issues it.
So instead of issuing the money itself, the government borrows the money from a private bank which issues the notes and charges us interest. What a racket.