Sheriff Joe Arpaio's lead investigator met with ABC15 Mornings to discuss how effective their investigation has been on President Barack Obama's birth certificate. Mike Zullo touched on points like batch numbers being inconsistent on the certificate and information on Obama's father not being properly marked. After watching Arpaio's Tuesday news conference, how effective do you think it was? Watch the full interview between Zullo and ABC15's Connie Colla in the attached video.