Did you read the articles? They don’t have REAL T-Bills they have “special” T-Bills that can ONLY be sold to the US government. Which means the money has to come from current income.
Wrong.
“The Social Security trust fund holds about $2.4 trillion in U.S. Treasury bonds, which its trustees are legally entitled to redeem whenever Social Security is running a current account deficit. Thus, if we reach the debt ceiling (which I continue to think is a remote prospect, even if less remote than it seemed a week ago), this is what will happen. The Social Security trust fund will go to Treasury and cash in some of its securities, using the proceeds to send checks to recipients. Each dollar of debt that is redeemed will lower the outstanding public debt by a dollar. That enables the Treasury to borrow another dollar, without violating the debt ceiling. The debt ceiling is not a prohibition on borrowing new money; it is a prohibition on increasing the total level of public indebtedness. If Social Security cashes in some of its bonds, the Treasury can borrow that same amount of money from someone else.”