From a Pima College press release quoted in the Tucson Sentinel:
A follow-up letter was sent to him October 7, 2010 indicating that if he intends to return to the College, he must resolve his Code of Conduct violations and obtain a mental health clearance indicating, in the opinion of a mental health professional, his presence at the College does not present a danger to himself or others.
After this event, there was no further College contact with Loughner.
Does the sentence above imply that because he’d have to be certified safe by a mental health professional, college officials did indeed consider him a possible danger? One could argue yes.
So what was their responsibility at that point?