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.
How to Become a U.S. Marshal. The United States Marshal Service is the Department of Justice agency that is responsible for protecting the judicial system. They ensure that justice can be carried out without threat to court buildings, court officers, witnesses, or anyone else involved in trials.