What are the three branches of the government? What does the House sergeant-at-arms do? How does a bill become a law? You can find the answers to these questions and more in 'National Government.' As you go on this guided tour through national government, you'll learn about the powers of the executive, legislative, and judicial branches of the United States government. You will find out how the U.S. Constitution was designed to protect the rights of the people. And, you'll also learn about the powers the president has as chief executive and commander-in-chief.