During the negotiations over raising the debt ceiling, President Obama proposed cutting the annual cost of living adjustment for Social Security by switching to an index that would show a lower measured rate of inflation. This alternative index, the chained consumer price index (CCPI-U), shows an annual rate of inflation that averages approximately 0.3 percentage points less than the consumer price index (CPI-W) that is currently used to index benefits. While this change would lead to $122 billion in savings to the government over the next decade, it also means that beneficiaries would receive lower benefits.Since the vast majority of retirees rely on Social Security for the bulk of their retirement income, this cut in the cost of living ad...