With the end of the Summer break, now comes the return of the debt limit dance. From Treasury Secretary Jacob Lew's letter to John Boehner:
“Congress should act as soon as possible to protect America’s good credit by extending normal borrowing authority well before any risk of default becomes imminent.
“Based on our latest estimates extraordinary measures are projected to be exhausted in the middle of October. At that point, the United States will have reached the limit of its borrowing authority, and Treasury would be left to fund the government with only the cash we have on hand on any given day, The cash balance at that time is currently forecasted to be approximately $50 billion.
“. . . A cash balance of approximately $50 Billion would be insufficient to cover net expenditures for an extended period of time. And, on certain days, net expenditures could exceed such a cash balance.
“. . . Protecting the full faith and credit of the United States is the responsibility of Congress because only Congress can extend the nation’s borrowing authority . . .“
OK. So, only Congress can extend the nation's borrowing authority. But it doesn't follow from that fact that protecting the full faith and credit of the United States is the sole responsibility of Congress. Read more about Jack Lew: Avoiding Default Is Your Responsibility Too