The AARP endorsed a pension package to be introduced by Sens. Charles E. Grassley, R-Iowa, chairman of the Senate Finance Committee, and Max Baucus, D-Mont. The association vehemently opposed an earlier version of the bill that died in the last congressional session. In an April 2 letter to Mr. Grassley, AARP head Horace B. Deets said the new version preserves rules that protect moderate-wage workers, improves disclosure for plans that significantly reduce benefits, and encourages savings by low- and moderate-income workers. "These changes, along with a number of provisions that carry over from last year, have produced a more balanced bill that should serve to increase the amount of both individual and employer-provided retirement savings, Mr. Deets wrote.