A proposal to serve alcohol at some on-campus events at the College of Southern Idaho has been rejected. The CSI trustees voted Friday to deny a request from organizers from one annual event to serve alcohol. Trustees cited concerns about liability and the challenge of deciding which groups should get permits.  The Times News reports the board of trustees of the Twin Falls-based community college gets about five requests to serve alcohol per year. CSI President Jerry Beck said the decision to keep the campus alcohol free is complicated, but the best decision is to keep beer and wine out of the campus environment.