The government has a system called “checks and balances” which allows each branch to have the power to check on the other two branches. For example; Congress has the power to impeach presidents or supreme court judges, the Supreme Court has the power to over turn a law that they believe is unconstitutional, and the president has the power to veto bills sent from congress which prevents that bill from becoming a law. The three branches are as follows: Legislate (congress), Executive (the president and Vice President), and the Judicial branch (Supreme Court). I hope this helps answer your question.