Niall Ferguson in the FT:

Credit for averting a second Great Depression should principally go to Fed chairman Ben Bernanke, whose knowledge of the early 1930s banking crisis is second to none, and whose double dose of near-zero short-term rates and quantitative easing – a doubling of the Fed’s balance sheet since September – has averted a pandemic of bank failures. No doubt, too, the $787bn stimulus package is also boosting US GDP this quarter. But the stimulus package only accounts for a part of the massive deficit the US federal government is projected to run this year. Borrowing is forecast to be $1,840bn – equivalent to around half of all federal outlays and 13 per cent of GDP. A deficit this size has not been seen in the US since the second world war. A further $10,000bn will need to be borrowed in the decade ahead, according to the Congressional Budget Office. Even if the White House’s over-optimistic growth forecasts are correct, that will still take the gross federal debt above 100 per cent of GDP by 2017. And this ignores the vast off-balance-sheet liabilities of the Medicare and Social Security systems. It is hardly surprising, then, that the bond market is quailing. For only on Planet Econ-101 (the standard macroeconomics course drummed into every US undergraduate) could such a tidal wave of debt issuance exert “no upward pressure on interest rates”. Of course, Mr Krugman knew what I meant. “The only thing that might drive up interest rates,” he acknowledged during our debate, “is that people may grow dubious about the financial solvency of governments.” Might? May? The fact is that people – not least the Chinese government – are already distinctly dubious. They understand that US fiscal policy implies big purchases of government bonds by the Fed this year, since neither foreign nor private domestic purchases will suffice to fund the deficit. This policy is known as printing money and it is what many governments tried in the 1970s, with inflationary consequences you do not need to be a historian to recall.