What is the example of checks and balances?
President has Veto power for the Executive Branch over the bills passed by house and senate. Veto requires a 2/3 majority to override a Veto.
Since the Constitution places the power and responsibility for passage of legislation with the Congress, passing a law is more an example of the basic function of the legislative branch than an example of checks and balances. However, it could become an example of checks and balances if Congress passes a law, the President vetoes it, and Congress then overrides the President's veto as provided in the Constitution.