On April 21, Kevin Warsh sat before the Senate Banking Committee and told senators that "inflation is the Fed's choice." He called the post-COVID years "fatal policy errors." He proposed ending forward guidance, shrinking the $6.7 trillion balance sheet, and installing a rules-based framework targeting zero percent inflation over time. Wall Street applauded. The bond market nodded. And almost nobody asked the obvious question: what happens when that framework meets a stagflation economy?

The answer is not reassuring.

The Right Diagnosis, the Wrong Prescription

Warsh's critique of the Powell Fed is largely correct. The balance sheet at $6.7 trillion, roughly 11% of GDP, is still nearly double its pre-2008 norm. Forward guidance became a hostage negotiation where the Fed was both the hostage and the negotiator. The communication failures were real. His instinct to restore institutional credibility through clearer rules is not wrong in principle.

But a rules-based framework targeting zero inflation is designed for one specific problem: an economy running too hot. Stagflation is two problems at once. Prices rising while growth contracts. The Middle East energy shock from the Eight-Week War is already doing what energy shocks always do: pushing input costs up while squeezing consumer purchasing power simultaneously. Britain's Bank of England is already caught in this trap, raising rates into a weakening economy because inflation won't cooperate with the growth picture.

A rigid price-stability rule in that environment forces the Fed to tighten precisely when the growth side of the equation is screaming for relief. The 1970s Fed under Arthur Burns tried to split the difference and got the worst of both worlds. Paul Volcker eventually broke inflation, but he had the luxury of a single mandate and a recession he was willing to engineer. Warsh's framework would hand him Volcker's tools in Burns's economy.

30-Year Mortgage Rate, 2022–2026 2% 4% 6% 8% Jan '22 Nov '22 Sep '23 Aug '24 Jun '25 Apr '26 Rate (%)
Mortgage rates have stayed elevated even as the Fed paused hikes; balance sheet contraction under Warsh's framework would push long-term yields, and rates like this, higher still. Source: Federal Reserve Economic Data (FRED)

The Balance Sheet Problem Has Terrible Timing

Shrinking the balance sheet from $6.7 trillion pushes long-term yields higher. That is the mechanism. Higher long-term yields mean a 30-year mortgage that currently runs around 6.8% could push toward 7.5% or beyond during an active contraction cycle. On a $400,000 home loan, the difference between 6.8% and 7.5% is roughly $190 per month. For a family already absorbing energy price spikes, that is not a rounding error.

Warsh's defenders will argue that restoring credibility now prevents worse pain later, and they have a point worth taking seriously. Anchored inflation expectations are genuinely valuable, and a Fed that loses credibility on price stability faces a harder road than one that holds the line. I grant that.

But credibility is not the binding constraint right now. Flexibility is. Stagflation punishes central banks that cannot pivot. A rules-based framework is structurally resistant to pivoting. That is the feature Warsh is selling. In a stagflation scenario, it becomes the bug.

Senator Warren's "sock puppet" line was theater. The more serious concern is not that Warsh will cut rates on Trump's command. It is that his framework will prevent the Fed from cutting rates when the economy genuinely needs it, because the inflation rule says no. The political independence question and the policy flexibility question are separate problems, and the Senate Banking Committee spent most of its time on the wrong one.

Warsh is the nominee you want if 2021 is coming back. The energy shock, the tariff pass-through, and the slowing growth data suggest 2021 is not coming back. The Fed needs a chair who can hold inflation credibility in one hand and economic flexibility in the other. Warsh has told us, clearly, which one he plans to drop.