U.S. wholesale inflation fell from May to June on plunging energy prices, but intensifying hostilities with Iran are clouding the outlook.The US Labor Department reported Wednesday that its producer price index – which captures inflation before it reaches consumers – dropped 0.3 per cent from May, biggest decline since April 2025 and a reversal from a 0.6 per cent uptick the month before. Compared to a year earlier, wholesale prices were up 5.5 per cent in June, decelerating from a 6.0 per cent increase the month before. Gasoline prices plunged 12 per cent in June but are still up nearly 43 per cent from June 2025, pushed higher by the Iran war. Food prices also dipped in June.Excluding volatile food and energy prices, so-called core wholesale prices were up 4.7 per cent from June 2025 and 0.2 per cent from May.The producer price report came out a day after the Labor Department said consumer prices dropped 0.4 per cent from May to June, the biggest monthly drop in four years. Compared to a year earlier, they were up 3.5 per cent last month, down from 4.2 per cent in May. The June inflation numbers were much cooler than forecasters had expected, reducing pressure on the Federal Reserve to raise interest rates this year. Still, inflation is running above the Fed’s 2 per cent target.In his first appearance before Congress since becoming Fed chair May 22, Kevin Warsh said Tuesday that the central bank has “no tolerance for persistently elevated inflation.”Energy prices have ratcheted higher since President Donald Trump on Monday announced a new blockade in the Strait of Hormuz, through which a fifth of the world’s oil and natural gas passes. Many Americans are already frustrated with the high cost of living, dimming the prospects of Trump’s Republican Party in November’s midterm elections.“There’s no near-term pressure on the Fed, but oil is in the driver’s seat over the longer term,” said David Russell, global head of market strategy at the online brokerage TradeStation. “Energy saved the day in June, but that might become ancient history if the Strait of Hormuz doesn’t open soon.”Wholesale prices can offer an early look at where consumer inflation might be headed. Economists also watch it because some of its components, notably healthcare and financial services, flow into the Fed’s preferred inflation gauge – the personal consumption expenditures, or PCE, index. – AP