Although industry experts doubt it will have any effect, half a dozen senators gathered in front of a Washington service station to push their own remedies to the situation, the Washington Post said.
The latest average price for a gallon of unleaded regular gas was $3.042, according to the AAA Fuel Gauge report.
Sen. Maria Cantwell, D-Wash., promoted her anti-price-gouging bill, which the Senate Commerce Committee adopted earlier this week.
The U.S. government's Energy Information Administration
predicted regular unleaded gasoline would average $2.95 a gallon this summer, 11 cents a gallon more than last summer.