They were previously good ole treasuries, they are now treasuries rebranded!.........
They are not negotiable meaning they cannot be traded and have no market value. In other words, they are meaningless.
Their only value is the backing of the full faith and credit of the United States. But that backing is growing more and more precarious.
Trump will not touch them, he will have the SS Trust solvency in mind when his plan takes action. He wants to save SS for all Americans.