Here's a quick economics lesson: when a major shipping lane for oil gets clogged, you feel it at the pump. And then at the grocery store. And then when you book a flight. That's the warning from Senator Elissa Slotkin (D-Mich.), who says ongoing U.S. military actions in Iran are doing exactly that—driving up fuel costs and creating a cascade of price hikes across the economy.

On Monday, Slotkin took to social media to explain the mechanics. "Because of President Trump's war in Iran, anything that depends on the cost of fuel is going to go up," she wrote. "That means trucking, that means airline tickets. That means the price of food."

The Chokepoint That's Choking Supply

In a video, she zoomed in on the Strait of Hormuz, the narrow passageway between the Persian Gulf and the Gulf of Oman. It's not just any shipping lane; it's a superhighway for oil. "20% of the traffic that moves oil around the world goes through that one choke point," Slotkin said. "So right now, there is virtually no traffic moving… because the insurance company is not insuring ships that are going to transit right now."

Without insurance, shipping grinds to a halt. Slotkin noted that companies would need a military escort to navigate safely, something that hasn't been provided. The result? An immediate shock to the system. "We've seen oil, just in the past couple of days, the price of gas go up by 60 cents in the state of Michigan," she said, framing it as a direct consequence. "Anything that depends on the cost of fuel is going to go up... that means the price of food as you move that back and forth just became more expensive."

A Growing Chorus of Concern

Slotkin isn't the only lawmaker sounding the alarm. Representative Ilhan Omar (D-Minn.) said the conflict had already cost over $11 billion in its first week, with nearly $2 billion spent daily, and blamed rising gas prices on what she called Trump's "reckless abuse of power."

Senator Jeff Merkley (D-Ore.) labeled the situation a "war of choice," one that's directly driving up prices for gas, groceries, and other everyday goods. The concern is that this isn't a temporary blip. Senator Adam Schiff (D-Calif.) warned that conflicting timelines from the administration and continued attacks on the Strait of Hormuz could prolong U.S. involvement, keeping energy and living costs elevated.

The political and fiscal pushback is also mounting. Senator Elizabeth Warren (D-Mass.) vowed to block a $50 billion war funding request, arguing the money could be better spent on domestic priorities like healthcare programs and the Affordable Care Act.

The message from these lawmakers is clear: a conflict thousands of miles away, centered on a narrow strip of water, is having a very direct and expensive impact on the American consumer's bottom line.