1. He served as commissioner of Social Security under Presidents Kennedy, Johnson, and Nixon. He was a member of the Social Security Advisory Councils of 1979 and 1991 and is a member of the current Advisory Council. He also was a key member of the National Commission on Social Security Reform, which led to the 1983 Social Security amendments. After thirty years of service at the Social Security Administration, he was a senior scholar at the Institute of Medicine from 1973 to 1980. He is a founding member...