| A | B |
| Bicameral | a two-house legislature |
| Checks and balances | a key aspect of the Constitution of the United States protecting the balance of power among the three branches of government. The concept was first suggested by James Madison in the Federalist Papers |
| Elastic Clause | found in Article I Section 8 of the Constitution, it gives Congress the power to make "all laws necessary and proper" to carry out the other defined powers of Congress |
| Electoral college | consists of presidential electors from each state who vote on the President |
| Enumerated powers | delegated powers of Congress, including the power to collect taxes, pay debts, provide for the common defense and general welfare, regulate commerce among the states, coin money, and declare war. |
| Ex post facto laws | laws that take effect after the act takes place. Congress is prohibited from enacting this type of legislation. |
| Executive privilege | the ability of the president to protect personal material. |
| Federalism | the overall division of power between the federal government and state governments; as defined in the Tenth Amendment of the Constitution |
| Full faith and credit | phrase used to describe the mutual respect and legality of laws, public records, and judicial decisions made by states. |
| Judicial review | derived from the Marbury v Madison decision, it gives the Supreme Court the power to interpret the Constitution and specifically acts of Congress, the president, and the states. |
| Preamble | the introduction to the Constitution, outlining the goals of the document. |
| Privileges and immunities | the guarantees that the rights of a citizen in one state will be respected by other states. Also a clause in the Fourteenth Amendment that protects citizens from abuses by a state. |
| Reserved Power Amendment | found in the Tenth Amendment, it gives states powers not delegated to the national government. |
| Separation of powers | this important doctrine resulted in the establishment of three separate branches of government—the legislative, executive, and judicial branches, each having distinct and unique powers |
| Supremacy clause | clause that states that "the Constitution, and the laws of the United States... shall be the supreme law of the land." |
| Unwritten Constitution | traditions, precedent, and practice incorporated into our form of government that add to the Constitution's elasticity and its viability |