There might be a small combination of pills here .. something like a muscle-relaxer plus an anti-psychotic prescription drug .. together they powerfully mute the normal human response to stress, but not so much that the subject does not appear normal, and can speak clearly enough. Then the subject sits there, on camera, sworn in under oath perhaps, and glides through the session with good notes from a hired lawyer.
For an industry measured in the many-billions of dollars, per year for many years.. how many wanna-be Fortune Magazine cover cuties would do that ? lots. This is all conjecture, for the record.. think for yourself