Treasury Demand Substitution

179.先救日元再救长债，“救火队长”贝森特在走一条怎样的钢丝？ uses Treasury Demand Substitution for the policy bundle that tries to replace or supplement foreign official demand for U.S. Treasuries. In the episode, Scott Bessent / 贝森特 needs alternative absorption channels because Bessent Impossible Triangle / 贝森特不可能三角 makes old foreign-surplus recycling less reliable.

Mechanisms

• Stablecoins can create reserve demand for short-term Treasury bills.
• Bank balance-sheet relief can make dealer and bank Treasury holding less balance-sheet expensive.
• FIMA Repo Backstop can reduce the need for foreign central banks to sell Treasuries when defending currencies.
• Treasury Buyback Policy can improve off-the-run liquidity and relieve some dealer inventory.
• Maturity management can change the amount of long-duration supply the market must absorb.
• Pressure on the Federal Reserve can try to align monetary tools with Treasury financing needs.

Limits

• The source stresses that these tools can improve plumbing and timing but cannot create global savings by themselves.
• Substitution can move risk into private issuers, banks, central-bank facilities, or political expectations.
• The larger the fiscal rollover burden, the harder it is for technical tools to substitute for credibility and demand.

Connections

• Bessent Impossible Triangle / 贝森特不可能三角, Scott Bessent / 贝森特, and U.S. Treasury - source frame and institutional actor.
• Stablecoins, FIMA Repo Backstop, Treasury Buyback Policy, and Treasury Duration Risk - component mechanisms and risks.
• U.S.-Japan Currency Intervention - case where protecting Treasury demand shapes currency policy.