sentences:  Dr. Cox was elected the 39th Mayor of Chula Vista, the second largest city in the County of San Diego, in 2006.Currently she is a member of the City of Chula Vista Charter Review Commission, Nature Center Board of Trustees and the President of the Sharp Chula Vista Medical Center Board of Directors.She is a member of the Mayors Against Illegal Guns Coalition, an organization formed in 2006 and co-chaired by New York City mayor Michael Bloomberg and Boston mayor Thomas Menino.