"Adopting the chained CPI (Consumer Price Index) in Social Security to more accurately account for changes in the cost of living is a small first step toward fixing a broken program that is currently accelerating its own demise by paying excess benefits.... One reason the system is in trouble is that the Social Security Administration is paying cost-of-living adjustments (COLAs) based on an outdated and inaccurate index that overstates changes in the cost of living."