A bill to establish the plea of guilty but insane.

Amends the Federal criminal code to authorize a verdict of "guilty but insane" for any criminal defendant who raises the issue of insanity by notice as provided by Rule 12 of the Federal Rules of Criminal Procedure. Provides that a defendant is "guilty but insane" if his actions constitute all necessary elements of the offense charged other than the requisite state of mind.

Provides that if the defendant is found "guilty but insane" the court may commit the defendant to serve all or a portion of a sentence in a suitable facility for treatment of his mental condition. Requires the defendant to serve the remaining portion of his sentence upon release from the mental facility.

Transfers the burden of proof to the defendant.