5 4: Use Trained Investigators to Obtain Sworn Witness Statements CWhen No Hot Documents Are Uncovered by Investigators — a Frequent Event As Increased Deterrence Will Cause Cartels to Become More Sophisticated — Individual Admissions Are Needed to Prove Existence of Cartels The Ability to Compel Testimony Under Oath and Under Penalty of Perjury Is an Invaluable Tool Use Investigators Trained in Interviewing You Can't Catch a Thief With an Economist
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