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.
1 The department supervises U.S. district attorneys and marshals, supervises federal prisons and other penal institutions, and advises the President on petitions for paroles and pardons. 2  The department represents the U.S. government in legal matters and gives legal advice to the President and other members of the Cabinet.