AP/high-school US government foundations.
Preamble purpose
States goals of the Constitution.
Article I
Legislative branch (Congress).
Article II
Executive branch (President).
Article III
Judicial branch (courts).
Bill of Rights
First 10 amendments.
Separation of powers
Divide authority among branches.
Checks and balances
Each branch can limit others.
Federalism
Power shared by national and state governments.
Supremacy Clause
Federal law supreme within constitutionality.
Elastic Clause
Necessary and proper powers for Congress.
Commerce Clause
Congress regulates interstate commerce.
Judicial review
Courts strike unconstitutional acts (Marbury).
Amendment process
Propose then ratify (Article V).
Enumerated powers
Powers listed for Congress.