Department of Homeland Security backs polygraph tests for suspected leakers
The Department of Homeland Security is using lie detector tests for agency employees to try to detect apparent leakers of classified information. Blake McConnell, a polygraph expert, joins CBS News with more.
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The Department of Homeland Security is using lie detector tests for agency employees to try to detect apparent leakers of classified information. Blake McConnell, a polygraph expert, joins CBS News with more.
