A car gets filled with gasoline at a service station in Silver Spring, Maryland, on February 23, 2012. US President Barack Obama tried to head off Republican criticism over rising gasoline prices, ridiculing their responses as bumper-sticker policies designed to win an election, not to solve the problem. Visiting the hard-hit election battleground of Florida, a feisty Obama responded to a barrage of Republican criticism that has accompanied a 13 percent increase in gasoline prices over the last year. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
