“Legal and medical experts are questioning the decision of a judge inColorado to allow James Holmes, the suspected gunman in the Aurora cinema shooting, to be tested with a ‘truth serum’ should he plead not guilty by reason of insanity. William Shepherd, chair of the criminal justice section of the American Bar Association, whose members include both prosecutors and defence lawyers, said that the proposed use of a ‘truth drug’ to ascertain the veracity of a defendant’s plea of insanity was highly unusual in the US. He predicted it would provoke intense legal argument relating to Holmes’s right to remain silent under the fifth amendment of the US constitution.”
http://www.guardian.co.uk/world/2013/mar/12/judge-approves-truth-serum-james-holmes