Oregon sheriff concerned about letters asking people to track possible immigrants

A sheriff in Oregon says he has contacted the FBI and is increasingly concerned about a letter circulating in his rural, coastal community asking people to write down the license plate numbers of possible immigrants.

​ A sheriff in Oregon says he has contacted the FBI and is increasingly concerned about a letter circulating in his rural, coastal community asking people to write down the license plate numbers of possible immigrants. Read More Breaking News, Latest News and Videos | CNN