On a late Monday afternoon just past, more than a dozen people lined up for the inevitable food handlers' and caregivers' ritual of getting a health card from the Clark County Health District on Shadow Lane in Las Vegas. "First time or renew?" questions each of the three women working the small windows on Wing 8. One by one, the mostly Hispanic crowd answers that question. Depending on their answer, they would either be sent on to the renewal line - further down the hall - or go on the next round of questioning. "I'm hearing that I need some...