PHOENIX - After first apologizing for suggesting an electric fence along the border, Republican presidential candidate Herman Cain told reporters here Monday that he still thinks it's a good idea for controlling illegal immigration. "I'm not walking away from that," he said. Cain has spent the last several days explaining a controversial comment about building an electrified fence along the U.S. - Mexico border that he said could kill people trying to enter the country illegally. On Sunday, he said his comments were "a joke." But talking to reporters here after a meeting here with Maricopa County Sheriff Joe Arpaio,...