The supreme courts ability to interept the constitution is called

The supreme courts ability to interpret the constitution is called judicial review.

Explanation:

The Supreme Court with the Constitutional Interpretation, the law states that the Court is charged with keeping up the promise of equal justice to the people of America and also it functions as a guardian or caretaker and interpreter of the Constitution.

There are some sources that listed below have guided interpretation of the Constitution such as  

1. The structure and text of the Constitution.

2. Intentions of those who proposed, drafted, or voted to rectify the provision in question.

3. Prior precedents which is generally judicial.

4. The economic, social, and political sources.

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.