An initial toxicology report for Sandra Bland, who died in a Texas jail cell three days after her arrest during a traffic stop, raises the possibility that she may have used marijuana while in custody, two experts said. The amount of THC, one of the active components of marijuana, in Bland's system was 18 micrograms per liter, according to the report released Monday. That's more than three times the legal limit for drivers in Colorado and Washington, states that permit the recreational use of marijuana. "I don't think it's possible to rule out the possibility of use while in jail,"...