While popular wisdom holds that the United States should save more now in anticipation of the aging of the baby boom generation, the optimal response to population aging from a macroeconomic perspective is not clear-cut. Indeed, Cutler, Poterba, Sheiner, and Summers ("CPSS",1990) argued that the...

This paper provides an introduction to the practice of forecasting "exogenous" components of federal government taxes and spending-policy actions, for short--in the United States. First, we estimate simple models of defense expenditures that are useful for constructing current-quarter forecasts...