US gas prices fall below $4 for 1st time since March

U.S. gas prices fell below $4 a gallon for the first time since March, averaging $3.999, following a U.S.-Iran agreement that diluted Iran's enriched uranium stockpile and waived sanctions. Regional disparities persist, with California at $5.64 and South Carolina at $3.58 per gallon. The agreement initiates a 60-day negotiation period for a final nuclear deal, while oil prices and supply chain disruptions from the Strait of Hormuz conflict linger.