Niall Ferguson explains how America's financial liabilities will burden our children and grandchildren.

As our economic difficulties have worsened, we voters have struggled to find the appropriate scapegoat. We blame the politicians whose hard lot it is to bring public finances under control. But we also like to blame bankers and financial markets, as if their reckless lending was to blame for our reckless borrowing. We bay for tougher regulation, though not of ourselves.