The document outlines the six basic principles of the US Constitution: popular sovereignty, limited government, separation of powers, checks and balances, judicial review, and federalism. It also discusses the two methods of amending the Constitution - formal amendments that change the written text, which require approval from Congress and state legislatures or conventions, and informal amendments through legislation, executive action, court decisions, political parties, and customs that change how the government operates without altering the text.

1. THE CONSTITUTION
Chapter 3

2. The Six Basic Principles
• The Constitution originally consisted of a Preamble, or
introduction, and seven sections called articles.
• The Framers developed the Preamble and articles around
the six broad ideas, or principles, described below:
• 1 – Popular Sovereignty
• 2 – Limited Government
• 3 – Separation of Powers
• 4 – Checks and Balances
• 5 – Judicial Review
• 6 – Federalism

3. The Six Basic Principles
• Popular Sovereignty is the idea that people are the
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source of all power held by the government.
Limited Government means that the government
possesses only the powers the people give it – it must
obey the Constitution.
This principle is also known as constitutionalism.
Government officials are subject to the rule of law – they
must always obey the law and are never above it.
Separation of Powers establishes three separate
parts, or branches, that share the government’s power.
These branches are the executive, the legislative, and the
judicial.

4. The Six Basic Principles
• The Constitution uses a system of checks and
balances to ensure that none of the three
branches can become too powerful.
• Each branch has ways to limit the power of the
other two.
• An example of this principle is the power of the
President to veto, or reject, any act of Congress.
• Congress may then override a veto with a twothirds vote in each house.

5. The Six Basic Principles
• Judicial Review is the power of the courts to
decide what the Constitution means.
• The courts also have the power to declare a
government action to be against the
Constitution, or declare the action
unconstitutional.
• Lastly, the Framers used the principle of
Federalism to divide power between the central
government and the States.

6. Formal Amendment
• The Constitution has lasted more than 200 years because
it has changed with the times.
• Many of its words and their meanings are the same, but
some words have been changed, eliminated, or added –
and some of the meanings have been modified as well.
• The alterations to the Constitution have occurred in two
ways: either through formal or informal amendments,
or changes.

7. Formal Amendment
• A formal amendment is a change to the Constitution’s
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written words.
The Framers created four ways to make such a change.
Method 1: Congress Proposes then State Legislatures
ratify.
Method 2: Congress Proposes the State Conventions
ratify.
Method 3: National Convention Proposes and State
Legislatures ratify.
Method 4: National Convention Proposes and State
Conventions ratify.

8. Formal Amendment
• The Framers followed the principle of federalism in
creating these methods.
• Amendments are proposed, or suggested, at a national
level – either by Congress or at a national convention.
• Then they are ratified at the State level – either in the
State legislatures or by State conventions.
• This method 1 has been used for all but one of the 27
amendments.

9. Formal Amendment
• The first ten amendments are called the Bill of
Rights.
• Congress proposed all of them in 1789 because
many people refused to support the Constitution
unless the Federal Government protected these
basic rights.
• The States approved these ten amendments in
1791.
• The other 17 amendments became part of the
Constitution one at a time.

10. Informal Amendment
• Many informal amendments to the Constitution have
been made since 1787.
• Unlike formal amendments, these have not changed the
Constitution’s actual word.
• These changes have come from five sources:
• 1 – Congress has made changes to the Constitution
through two kinds of basic legislation. First, it has passed
laws that fill in details about the specific ways the
government operates. Second, it has passed thousands
of laws that explain certain parts of the Constitution.

11. Informal Amendment
• 2 – The way Presidents have used their powers has
produced some informal amendments. For example, a
president may choose to make an executive agreement,
or pact, with the head of another country instead of a
treaty, or a formal agreement between two sovereign
countries that requires Congressional approval.
• 3 – The courts, especially the U.S. Supreme Court, have
informally changed the Constitution by explaining parts of
it when ruling on cases. The also decide if the government
actions are constitutional or unconstitutional.

12. Informal Amendment
• 4 – Political parties have informally shaped what the
government does. For example, the parties have
decreased the importance of the electoral college, the
group that formally selects the nation’s President.
• 5 – Customs are the usual ways people do things. Many
customs have developed in American government that
are not mentioned in the Constitution. For example, the
President’s Cabinet, or advisory body, is customarily
made up of the heads of executive departments and other
officers. Senatorial courtesy is a custom in which the
Senate will not approve a presidential appointment to
serve in a Sate if the appointment is opposed by a
senator from the President’s party.

13. Informal Amendment
• Sources of Informal Amendments to the
Constitution:
• Basic legislation (laws).
• Executive action.
• Court decisions.
• Party practices.
• Customs.