Oregon lawmakers are considering an amendment to a bill that would require concealed weapon permit holders to leave their guns locked in their cars while in a school.  Karen Twain, with the Tigard-Tualatin School District, says they have a zero tolerance policy for guns and should include everyone. Opponents say there's no evidence of problems with permit holders in schools, and that experienced gun carriers would provide extra security in schools in the event of an incident. The Senate Judiciary Committee plans to continue a hearing on the proposal next week.