(Read her letter: Page 1, Page 2.) Maggie Cornejo resigned today (Aug. 19) as executive director of San Mateo County Sheriff Christina Corpus' Sheriff's Activities League, saying in a scathing resignation letter that the organization has been crippled by politics and fear. Cornejo's resignation comes on the second day of a hearing to determine whether Corpus will remain as sheriff. She's accused of nepotism, intimidation, retaliation and other forms of corruption.