Ex-ATF Official Speaks Out Against Mayor's Actions In an op-ed featured in today's New York Sun, former ATF deputy assistant director Wally Nelson called New York City Mayor Michael Bloomberg's recent actions "an embarrassment." Nelson speaks out about Bloomberg's headline-grabbing "sting" operations, his negative comments aimed at ATF and the mayor's lawsuits against gun dealers that have potentially jeopardized more than a dozen ongoing investigations. Read Nelson's complete op-ed.