The Supreme Court's review of a law passed by Congress best demonstrates which principle of American government?

Answer: Checks and balances

Explanation: Checks and balances is a principle accustomed to a constitutional government. In the United States where the branches of governmental power are The Executive, The Legislature and the Judiciary. Checks and balances allows a certain branch to deliberate on or review the action of another branch. This is particular essential in ensuring that a certain branch is not wielding too much power and also aims to prevent or avoid mistakes and ultimately check centralization of power in a particular branch.