Dozens of Texas drivers have been stopped at a police road block, where they were then directed into a parking lot and forced into surrendering blood, saliva and breath samples in a study that has upset civil liberties advocates. The National Highway Traffic Safety Administration admitted it was attempting to conduct a government study meant to determine the number of drunk or drug-impaired drivers on the road at any given time. “It just doesn’t seem right that you can be forced off the road when you’re not doing anything wrong,” Kim Cope, who said she was forced to the side...