What federal agencies investigate and prosecute federal crimes?
Answer: Well, you have the Department of Justice is the agency that deals with the federal laws and enforcement of the laws, and they have various different agencies under that. The prosecution of the crimes falls within the United States Attorney’s office. And in every state they is various different districts in which the United States Attorney’s office has court, and they prosecute the crimes. The agencies that investigate the crimes vary; there’s the Drug Enforcement Agency (DEA), there’s also Alcohol Tobacco and Firearms—another agency (the ATF). You have the Federal Bureau of Investigation (FBI); you have the Food and Drug Administration (FDA). You also have ICE—Immigration and Customs Enforcement. So those are some of the agencies that do investigate and gain evidence for particular crimes; they also have arrest powers as well. And those are the agencies that you generally are dealing with anytime you have a federal crime that you’re defending.