Helen asks…Do you think gun purchasers should be required to submit to a lie detector test in order to purchase a gun?Criminals won't be able to fool the detector. It would be much more efficient than the NCIS system. Plus, it would avoid the delayed denial problem.Nancy answers:And what good would that do? We already know that lie detector tests are unreliable -- they are inadmissible as evidence in court -- so why would anyone think it would do anything at all to ferret out those who
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