Fuel prices a concern for many, but effects on campaign limited WASHINGTON - Many Americans, like Laura Pienik of Texas, fear the high price of gasoline will cause them financial difficulty in coming months, but they don't necessarily blame President Bush."Gas prices make me nervous," said Pienik, a 20-year-old from Fort Hood, who has one child and a husband stationed in Iraq. "We're military and don't get paid a lot of money. We're basically at the mercy of whoever sets the gas prices."...