U.S. diesel crack spreads plummeted by $12.70 to $97.85/barrel following a Politico report that the White House is preparing to implement a 90-day ban on diesel exports. In response, gasoline crack spreads rose by $2 to $47.41/barrel, reflecting market concerns that declining diesel margins could force refiners to cut production, leading to tighter gasoline supply. Concurrently, European diesel crack spreads also increased, as the market has already priced in expectations of reduced U.S. diesel exports.