... It's an inflation measure that would essentially tie tax rates and entitlement spending - on programs like Social Security - to the rise in prices over time. The government currently uses a different inflation measure to calculate Social Security ...
http://www.washingtonpost.com/blogs/federal-eye/wp/2013/04/18/how-would-chained-cpi-affect-your-benefits/
http://www.washingtonpost.com/blogs/federal-eye/wp/2013/04/18/how-would-chained-cpi-affect-your-benefits/
