DALLAS (AP) — America's rediscovered prowess in oil production is shaking up old notions about the impact of higher crude prices on the U.S. economy. It has long been conventional wisdom that rising oil prices hurt the economy by forcing consumers to spend more on gasoline and heating their homes, leaving less for other things. Presumably that kind of run-up would slow the U.S. economy. Instead, the economy grew at its fastest rate in nearly four years during the April-through-June quarter.