From AP via Boston.com
Tweaking the way the government measures inflation sounds like an obscure method to help reduce budget deficits, but over time it would lead to significantly lower Social Security benefits while increasing taxes, mainly on low- and middle-income families.
The inflation measure under consideration is called the Chained Consumer Price Index. On average, the measure shows a lower level of inflation than the more widely used Consumer Price Index.
Sounds to me like this is just more gaming of the CPI to the detriment of savers who face an ever growing challenge of protecting their savings from inflation.