establishes that all power rests with the people, and that

divides the powers of the national government among the Congress (legislative branch), the president (executive branch), and the courts (judicial branch).

When a court declares an action unconstitutional, it becomes illegal the moment the ruling is issued.

government can do only those things that the people have given it authority to do. In other words,

State local governments deal with matters of regional and local concern, while the national government deals with issues that affect the country as a whole