Young undocumented immigrants in San Diego County and across the country became eligible Wednesday to apply for a program allowing them to avoid deportation, attend school or work. www.uscis.gov/childhoodarrivals and can be filed online. But immigration attorney Jacob Saposchnick said that applicants should not rush to file without receiving some guidance."If you miss something on the form, if you don't do it correctly, that's it, it's over," he said. "There's no way to appeal it."