PHOENIX -- The self-proclaimed "America's Toughest Sheriff" is joining forces this weekend with action movie star Steven Seagal to train volunteer armed posse members to defend Phoenix-area schools against gunmen.Maricopa County Sheriff Joe Arpaio announced the controversial plan in the wake of the December Newtown, Conn., school shooting that left 27 people dead, including the gunman and 20 first-graders.Read More... More on Gun Control