As a counterpoint to separation of powers, the principle that the president, Congress, and the Supreme Court share power over the laws of the country. The U.S. system of government is sometimes called a shared-powers system.. whip.
The Department of Justice (DOJ) is a cabinet-level agency responsible for enforcing the laws of the United States federal government. DOJ ensures public safety against foreign and domestic threats, including terrorism, and preventing crime.
The United States Marshals Service (USMS) is a U.S. federal law enforcement agency within the U.S. Department of Justice (see 28 U.S.C. Â§ 561). The Marshals Service is the oldest American federal law enforcement agency. The U.S. Marshals office was created by the Judiciary Act of 1789. The Marshals Service is part of the executive branch of government, and is the enforcement arm of the U.S. federal courts.