It appears that the idea that he can plead insanity might be more difficult then he thought. Colorado has changed their laws on that like other states have-
"John Hinckley, Jr., escaped criminal punishment when he attempted to assassinate President Ronald Reagan to impress the actress Jodie Foster, but in the wake of his successful insanity defense, legislatures made it considerably more difficult for defendants to prevail on the grounds of mental incapacity. Under the law that existed at the time, defendants were not legally responsible even if they knew an action was wrong if they could show they were unable to resist the impulse to commit the act. After Hinckley's case, a number of states, including Colorado, amended their laws to permit a successful insanity defense only if the defendant did not know the difference between right and wrong. The upshot of this more stringent requirement is that defendants rarely prevail when they claim insanity."
That quote is from this article here-
http://usnews.msnbc.msn.com/_news/20...on-motive?lite