Mental Illness - As introduced, enacts "The Isbill Act," which requires the POST commission and Tennessee corrections institute to adopt guidelines and materials instructing law enforcement officers and correctional personnel on the criteria for emergency and nonemergency involuntary admissions to inpatient treatment and requires law enforcement officers and correctional personnel to undergo annual training on those guidelines and materials. - Amends TCA Title 33; Title 38 and Title 41. Companion bill has been assigned Public Chapter Number 960 by the Secretary of State.