You may have noticed that gas prices at the pump are going up. The average price per gallon nationwide hit $2.69 yesterday according to AAA. That’s up 28 cents in a month and nine cents in just a week. President Trump has noticed, too. He tweeted yesterday that OPEC, the international oil cartel, should ramp up their production to lower prices. Currently, the states with the least expensive prices per gallon are Mississippi ($2.10), Alabama ($2.12), Louisiana ($2.12), Arkansas ($2.13), Missouri ($2.13), Texas ($2.14), Colorado ($2.14), South Carolina ($2.15), Virginia ($2.17) and Kansas ($2.18). Note that many are near the huge refineries on the Gulf Coast. Transportation costs are among the factors that drive gas prices.