The USA - the presidential republic. It consists of two parts and the Senate. In each state there are two senators who are elected each 6 years.
The president costs above chamber and can output new laws, But above the president there is the Supreme Court. If suddenly he commits a crime, he is punished by the Supreme Court.
The vice-president has a right for the amendment of the law too in case this law it does not suit the .rabot of the president consists in putting into practice laws. The Supreme Court is the highest judicial authority in the country.