Which are usually some of the best and most helpful federal fraud investigators? Naim 23:39 Fraud Examination Chapter 9 Which are usually some of the best and most helpful federal fraud investigators? A. Officers of the Secret Service B. Employees of the Bureau of Prisons C. Officers of the Department of Vital Statistics D. Postal inspectors Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+