I wonder about any Treasury bond as collateral these days as a safe IOU. SS is poster child for stealing peoples investment that Congress forced deductions in paychecks. Then they used interest as personal checking account to tune of 2.7 trillion. They then added their debt to national debt making the ones who paid in to it liable for debt that we citizens did not cause bu president/Congress buying allies. Same as Republican caucus here for pet friends projects. Now they want the savings and PFD to cover their fraudulent deals. Term limits and if found selling their office then cook em over very hot fire!