Simon Johnson, whom I consider quite good in his analysis of the financial sector, offers the following view of what the debt default that the Republicans are threatening would look like:
"A government default would destroy the credit system as we know it. The fundamental benchmark interest rates in modern financial markets are the so-called risk-free rates on government bonds. Removing this pillar of the system—or creating a high degree of risk around U.S. Treasurys—would disrupt many private contracts and all kinds of transactions. In addition, many people and firms hold their rainy day money in the form of U.S. Treasurys. The money-market funds that are perceived to be the safest, for example, are those that hold only U.S. government debt. If the U.S. government defaults, all of them will "break the buck," meaning they will be unable to maintain the principal value of the money that has been placed with them.
"The result would be capital flight—but to where? Many banks would have a similar problem: A collapse in U.S. Treasury prices (the counterpart of higher interest rates, as bond prices and interest rates move in opposite directions) would destroy their balance sheets. There is no company in the United States that would be unaffected by a government default—and no bank or other financial institution that could provide a secure haven for savings. There would be a massive run into cash, on an order not seen since the Great Depression, with long lines of people at ATMs and teller windows withdrawing as much as possible.
"Private credit, moreover, would disappear from the U.S. economic system, confronting the Federal Reserve with an unpleasant choice. Either it could step in and provide an enormous amount of credit directly to households and firms (much like Gosbank, the Soviet Union's central bank), or it could stand by idly while GDP fell 20 to 30 percent—the magnitude of decline that we have seen in modern economies when credit suddenly dries up.
"With the private sector in free fall, consumption and investment would decline sharply. America's ability to export would also be undermined, because foreign markets would likely be affected, and because, in any case, if export firms cannot get credit, they most likely cannot produce....
"The Republicans are right about one thing: A default would cause government spending to contract in real terms. But which would fall more, government spending or the size of the private sector? The answer is almost certainly the private sector, given its dependence on credit to purchase inputs. How much could it fall? Take the contraction that followed the near-collapse of the financial system in 2008 and multiply it by 10.
"The government, on the other hand, has access to the Fed, and could therefore get its hands on cash to pay wages. With the debt ceiling unchanged, this would require some legal sleight of hand. But the alternative would clearly be a collapse of U.S. national security—soldiers and border guards have to be paid, the transportation system must operate, and so on. Issuing money in this situation would almost certainly be inflationary, but the Fed might conclude otherwise, because the United States has never been in this situation before, credit is now imploding, and the desperate credit-expansion measures implemented in 2008 proved not to be as bad as the critics feared.
"So this is what a U.S. debt default would look like. The private sector would collapse. Unemployment would quickly surpass 20 percent. The government would shrink, but it would remain the employer of last resort."
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