http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=103x5691949.
In Reality, the US Government Spends First and Borrows Later; Public Spending Creates a Demand for Treasuries in the Private Sector.
As noted, the above argument is based on the common belief that the government must borrow in order to spend, and thus that the government faces "funding risks" in private markets. Such risks exist, of course, for private individuals, for companies, for state and local governments, and for national governments such as Greece that have ceded monetary sovereignty to a central bank. But the situation of the United States government is quite different.
The U.S. government spends (and the Federal Reserve lends) in a very simple way. It does so by writing checks -- in fact simply by marking up numbers in a computer. Those numbers then appear in the bank accounts of the payees, who may be government employees, private contractors, or the recipients of federal transfer programs.The effect of government check-writing is to create a deposit in the banking system. This is a "free reserve." Banks of course prefer to earn interest on their reserves. Thus they demand a US Treasury bond, which pays more interest without incurring any form of credit or default risk. (This is like moving a deposit from a checking to a savings account.) The Treasury can meet that demand, or not, at its option -- it can permit, or not permit, the stock of US Treasury bonds in circulation to increase.
So long as U.S. banks are required to accept U.S. government checks -- which is to say so long as the Republic exists -- then the government can and does spend without borrowing, if it chooses to do so. And if it chooses to issue Treasuries to meet the demand, it can do that as well. There is never a shortfall of demand for Treasury bonds; Treasury auctions do not fail.
In the real world, the government creates demand for bonds by spending above the level drained by taxation from the system. The extent to which those bonds are held locally, or abroad (another common source of worry), depends on the US current account deficit. This also has nothing to do with approval or disapproval by foreign bankers, central bankers, or their governments of American deficit policy. A foreign country cannot acquire a US Treasury bond unless someone outside the United States has acquired dollars to pay for them, which is generally done by running a trade surplus with the United States. And when foreigners do acquire those dollars, then like domestic banks they prefer to earn interest, which is why they buy Treasury bonds.
Insolvency, bankruptcy, or even higher real interest rates are not among the actual risks to this system. The actual risks in this system are (to a minor degree) inflation, and to a larger degree, depreciation of the dollar. However at the moment there is wide agreement that a lower dollar would be a good thing -- against the Chinese RMB and now also the euro. So it is difficult to believe that the goal of deficit reduction per se serves any coherent, or presently desirable, economic objective.
We can conclude that there is actually no economic justification for the target of reducing the primary deficit to zero by 2015 or any other date. The right economic objectives are to meet real problems, not those conjured from thin air by economists. Bringing about a rapid end to unemployment, caring properly for an aging population, cleaning up the Gulf of Mexico, coping with our energy insecurity and with climate change are all far more important objectives than reducing a projection of future budget deficits.