U.S. gasoline prices are sitting at four-year seasonal highs headed into the November midterm elections, even as President Donald Trump has called repeatedly for OPEC to push prices lower.  While gasoline prices typically drop following peak summer demand season, they have not fallen as fast as expected, said Jeanette Casselano, spokeswoman for the American Automobile Association. The national price average was at $2.867 a gallon as of Wednesday, its highest seasonally since 2014, according to AAA. (For monthly U.S. retail gasoline prices, see: tmsnrt.rs/2zszA2U ) Fuel prices have risen due to a surge in crude oil prices. U.S. crude futures have gained in part because of U.S. sanctions affecting Iran’s petroleum sector, which have already cut into that nation’s […]