When you read it and the debates and circumstances surrounding the creation and ratification, you find something out.
Who is "bound" to obey the Constitution? The people?
Nope.
The Constitution amounts to rules and regulations for the government. It is in fact a type of job description.
Actually, the citizenry have a duty to enforce the Constitution. Many of the problems we face today are a consequence of people's persistent failure to do so.
The Constitution is an owners' manual for the United States, by which people can recognize when they should assist the government in battling criminals, or assist fellow citizens in resisting lawless government agents.
Exactly!
Government, being a creation of man, is controlled by man made (positive) law.
Americans already had the laws contained in the 2nd table of the 10 Commandments (murder, theft, etc) called natural law.
The Constitution is a contractual agreement between the entities known as 'States' and the central government called the united States.