Extortion, in common law, an act of a public official who uses his or her position to obtain money or property illegally. Many states define the crime more broadly to include blackmail and similar acts committed by anyone.
It's possible that an MRI lie detector could detect truthfulness more accurately than a polygraph machine. How would it work?
Ask a card-carrying member of the NRA and you'll get one answer. Ask a participant in the Million Mom March and you'll get another. Ask us and you'll get the research that underlies this controversial topic.