" From a modest beginning in 1935 to an income replacement scheme for workers in commerce and industry, the social security system has grown to cover 90 percent of working Americans. It now pays $78 billion a year in benefits and is obligated to pay $4 trillion in future retirement benefits to workers now covered. With a projected tax rate of 30 percent of gross wages by the year 2050 to meet its obligations under current law, the system, in the...