The American Automobile Association expects the average price of a gasoline to reach $4.50 a gallon by Memorial Day. Sen. Bernie Sanders on Monday renewed his call for federal regulators to stop Wall Street speculators from pushing up crude oil prices.  Bart Chilton, one member of the Commodity Futures Trading Commission, told Sanders he was drafting regulations to curtail "excessive speculative trading." President Obama, Sanders said, should be more aggressive. He should tell Gary Gensler, the chairman of the five-member commission, that "you've got to do it and you've got to do it now."

Read the letter from Commissioner Chilton.