Opinion: Trump’s Newest Trade War Threat Could Force the Fed to Act Tomorrow

The story out of Iran over the past week seemed straightforward: With all sides agreeing to a truce to negotiate details of a long-lasting peace, oil prices tumbled, inflation pressures looked set to cool, and the pressure under the Federal Reserve raising interest rates tomorrow was released. 

Brent crude dropped below $80 per barrel after reports said the U.S.-Iran peace framework will quickly reopen the Strait of Hormuz, one of the world’s most important energy shipping routes. Markets welcomed the development because energy costs have been the biggest driver of consumer and producer inflation.

Then the narrative changed. President Trump has once again shifted attention back toward tariffs, reviving concerns that import costs could rise just as the Fed meets to decide the future path of interest rates. For a central bank already worried that inflation is proving stubborn, the timing could hardly be worse.

The Fed Was Already Worried About Inflation

Investors have spent much of 2026 debating when the Fed might begin cutting rates. As inflation surged, though, the talk turned to just the opposite: rates could actually rise!

Dallas Fed President Lorie Logan warned on June 3 that the central bank may need to raise interest rates later this year to bring inflation back to its 2% target. She argued that monetary policy may be “neutral or perhaps even a bit loose” despite inflation still running above target. Logan specifically pointed to strong economic growth and robust corporate earnings as evidence that demand remains healthy enough to keep price pressures elevated.

Those comments matter because they reveal where part of the Fed’s thinking already stood before the latest tariff threats emerged.

The central bank enters this week’s meeting with inflation still above target and policymakers divided over the next move. Reuters reported this morning that some Fed officials may even project future rate hikes in the updated “dot plot” forecasts released after the meeting tomorrow.

Tariffs Could Undo the Benefits of Lower Oil Prices

Lower oil prices generally reduce inflation because transportation, manufacturing, and energy costs decline. The recent Iran agreement appeared poised to deliver exactly that benefit. Oil prices have fallen sharply as talks progressed, with traders anticipating a reopening of global energy supplies.

As we saw last year, tariffs work in the opposite direction. When tariffs increase, imported goods become more expensive. Businesses often absorb part of those costs, but consumers frequently end up paying at least some of the difference through higher prices.

That creates a dilemma for the Fed. The problem isn’t that tariffs automatically cause runaway inflation, it’s uncertainty. Central bankers hate being caught behind the curve. If they believe tariffs could reignite price pressures later this year, they may feel compelled to maintain a hawkish stance today.

Markets May Be Underestimating the Risk

That said, a rate hike tomorrow remains unlikely. Most economists still expect the Fed to leave rates unchanged. The betting markets rate it a 100% chance rates stay the same. However, investors should pay close attention to the Fed’s updated projections and Chairman Kevin Warsh’s comments. Reuters reported that policymakers are increasingly wrestling with whether inflation risks are outweighing slowing-growth concerns.

In other words, the bigger story may not be what the Fed does tomorrow. It may be what the Fed signals about the second half of 2026. If tariffs become a larger part of the inflation outlook, discussions about rate cuts could quickly give way to discussions about rate hikes again.

Key Takeaway

In short, investors entered this Fed meeting expecting falling oil prices and easing geopolitical tensions to reduce inflation concerns. Trump’s renewed tariff threats may complicate that picture.

Granted, the Fed is still unlikely to raise rates immediately. But the odds of a more hawkish outlook appear higher today than they did over the weekend. Logan’s warning that rates may need to move higher was already on the table before tariffs returned to the conversation.

Ultimately, smart investors should focus less on whether the Fed moves tomorrow and more on whether policymakers begin signaling that inflation risks are rising again. If they do, expectations for future rate cuts could fade quickly, and markets may need to adjust — again.