Politicians will continue running large deficits as long as the bond market tolerates it by keeping interest rates low. The ultimate correcting mechanism for government spending isn't political discipline, but the bond market's impersonal decision to raise rates, forcing fiscal responsibility.

Historically, surges in U.S. public debt have consistently led to periods of negative real interest rates. This suggests that the sheer weight of government debt creates a structural constraint, forcing markets to keep real rates capped, irrespective of short-term inflation or central bank policy.

The Treasury actively stimulates liquidity by altering its debt issuance strategy. By issuing more short-term T-bills (bought by banks) and fewer long-term bonds, it effectively monetizes fiscal spending. This 'Treasury QE' is a major, under-the-radar source of liquidity for markets.

Due to massive government debt, the Fed's tools work paradoxically. Raising rates increases the deficit via higher interest payments, which is stimulative. Cutting rates is also inherently stimulative. The Fed is no longer controlling inflation but merely choosing the path through which it occurs.

Governments with massive debt cannot afford to keep interest rates high, as refinancing becomes prohibitively expensive. This forces central banks to lower rates and print money, even when it fuels asset bubbles. The only exits are an unprecedented productivity boom (like from AI) or a devastating economic collapse.

The Fed's tool of raising interest rates is designed to slow bank lending. However, when inflation is driven by massive government deficits, this tool backfires. Higher rates increase the government's interest payments, forcing it to cover a larger deficit, which can lead to more money printing—the root cause of the inflation in the first place.

The massive increase in government debt held privately has broken the monetary policy transmission mechanism. When the Fed raises rates, the private sector's interest income from Treasury holdings now rises significantly, creating a stimulus that counteracts the tightening effect on borrowing costs.

With federal debt at high levels, raising interest rates creates a massive fiscal transfer. The government's interest expense, now over a trillion dollars, becomes income for bondholders. This stimulatory effect for the wealthy can counteract the intended tightening, while simultaneously hurting lower-income individuals who need to borrow.

Higher interest rates on government debt are creating a significant income stream for seniors, who hold a large amount of cash-like assets. This cohort's increased spending power—either for themselves or passed down to younger generations—acts as a counterintuitive fiscal stimulus, offsetting the intended tightening effects of the Fed's policy.