The national average for U.S. gasoline prices has hovered above the politically sensitive $4-per-gallon level for 76 days, or roughly 2.5 months, as the Gulf energy shock tightened physical markets and forced emergency SPR draws. But with President Trump declaring late Sunday, just 30 minutes before NY futures opened, that a US-Iran peace deal has been secured, and with WTI and Brent futures tumbling, pressure at the pump could begin to ease in the very near term. National gasoline prices could slip back below $4 in the coming days or weeks if the crude selloff holds and traders begin pricing...