Students will return to the dorms at Washington State University in a couple of weeks, but the police won't – at least not without a warrant or an invitation. Campus officers no longer will make routine patrols of dorm hallways, after two cases in the spring in which criminal charges were dismissed after a judge ruled, in essence, that dorm hallways are like the hallways in your home – police can't just walk through them looking, listening and sniffing for crimes.