Explain the system of Checks and Balances with 3 short examples.

1. Signing bills into law. When a bill is passed by Congress, the president must sign it. If he doesn't agree with it or some aspects of it, he can veto the bill; his veto can be overrun only by two-thirds of votes in Congress.

2. Ratification. All the foreign treaties signed by the executive branch must be ratified by the Senate.

3. Impeachment. Following an investigation and a majority vote in the House of Representatives, the Senates judges the president of another official that is going to be impeached. Impeachment requires a two-third vote in the Senate.