The authors of the bill, Senator Orrin Hatch and Senator Ted Kennedy, argue that the polygraph is an unreliable measure of detection and therefore poses a serious threat to the rights of employees or prospective employees whose jobs depend on the results of a polygraph exam. A representative of the Justice Department opposes the bill as an unwarranted intrusion upon the rights of businesses and the prerogatives of States to regulate businesses in their jurisdictions, including their use of the polygraph. Psychologists testify on the technology of the polygraph exam and its inability to measure deception per se. Representatives of businesses that use the polygraph to screen employees generally oppose the bill because of their reliance on the polygraph to screen out undesirable employees. Some witnesses support the regulation of the use of the polygraph but oppose the bill's complete prohibition on its use. Representatives of various State agencies support the State regulation of polygraph uses within their jurisdictions. Appended additional statements.