EL PASO, Texas (KVIA) -- Many Americans are struggling to afford groceries. As oil prices rise, grocery prices climb with them. University of Texas at El Paso economics professor Tom Fullerton said this is most likely to continue. One El Pasoan, Ruben, says his family is focused on living within its means as rising prices continue to affect their household budget. “Less vacation, stuff like that,” Ruben said. He said he has noticed grocery pric…