Trump has a ‘sledgehammer’ way to slash diesel prices. But it could boomerang back on the USBy Matt Egan, CNN New York (CNN) — Diesel, the most important fuel on the planet, is so expensive that some Republicans want President Donald Trump to stop exporting it to friends and allies. “High diesel prices ARE KILLING FARMERS INCOME,” Republican Sen. Chuck Grassley posted on X last week, calling for an “embargo onABC17News.com14d agoWhole story →EconomyPlanetChuck Grassleydiesel price crisis