Beyond its stated goals of employment and price stability, the Fed's recent aggressive asset purchases show its primary role is often to ensure smooth market functioning, making it dependent on market signals.

The Fed's independence doesn't mean isolation. A functional working relationship with the Treasury is crucial for practical matters like ensuring Treasury market liquidity and coordinating bank regulation, areas where responsibilities overlap.

The Fed's intervention in funding markets, while not officially labeled Quantitative Easing, directly helps the Treasury finance its debt, effectively monetizing it and providing critical liquidity to markets.

Despite official rhetoric, the Fed is creating money out of thin air to buy short-term government debt. Labeled "reserve management purchases," this is functionally quantitative easing, designed to keep the government's borrowing costs from exploding.

Central bank independence is a relatively new concept from the 1990s. Historically, central banks operated as junior partners to the government, executing industrial policy. The move to subordinate the Fed to the Treasury is a return to a long-standing historical model.

Over the past few years, the Treasury Department and the Federal Reserve have been working at cross-purposes. While the Fed attempted to remove liquidity from the system via quantitative tightening, the Treasury effectively reinjected it by drawing down its reverse repo facility and focusing issuance on T-bills.

Under "fiscal dominance," the U.S. government's massive debt dictates Federal Reserve policy. The Fed must keep rates low enough for the government to afford interest payments, even if it fuels inflation. Monetary policy is no longer about managing the economy but about preventing a debt-driven collapse, making the Fed reactive, not proactive.

The U.S. government's debt is so large that the Federal Reserve is trapped. Raising interest rates would trigger a government default, while cutting them would further inflate the 'everything bubble.' Either path leads to a systemic crisis, a situation economists call 'fiscal dominance.'

In periods of 'fiscal dominance,' where government debt and deficits are high, a central bank's independence inevitably erodes. Its primary function shifts from controlling inflation to ensuring the government can finance its spending, often through financial repression like yield curve control.