In order to make sure that one branch of government does not have too much power, the Constitution provides for a system of "checks and balances." Each branch is given the opportunity to "check up" on the other branches, so that the power remains balanced. Which of the following is not an example of checks and balances?

President's veto power.
Judicial review.
Congress overriding a veto.
President's appointment of Cabinet.
Members Senate's approval of the President's appointments.