"Extradition" is the formal surrender of a person by a state to another state for prosecution or punishment. Extradition to or from the United States is a creature of treaty. The United States has extradition treaties with over a hundred of the nations of the world, although they are many with whom it has no extradition treaty. International terrorism and drug trafficking have made extradition an increasingly important law enforcement tool. This book is a review of the adjustments made in recent treaties to accommodate American law enforcement interests, and then a nutshell overview of the federal law governing foreign requests to extradite a fugitive found in this country and a United States request for extradition of a fugitive found in a foreign country.