Social Security must change: means test hard but necessary.
D000367:Age Factors; D000368:Aged; D004608:Eligibility Determination / Q000331:legislation & jurisprudence*; D006801:Humans; D007182:Income; D006278:Medicare / Q000331:legislation & jurisprudence; D011153:Population; D012179:Retirement; D012943:Social Security / Q000458:organization & administration*; D014481:United States