Gun control back as national issue

Don Burrows needed some cash so the East Texan drove to Fort Worth, taped a "For Sale" sign to his back and walked around a gun show, hoping to sell extra ammunition he had stockpiled. "I needed some extra beer money," he said with a grin. There, he was among gun aficionados privately peddling guns and ammoBut in the wake of the Virginia Tech killings and other gun violence this year, critics are calling for more regulations on everything from gun shows to background checks.