As part of the constitution under article i, section 8, establishes the exclusive authority of congress to regulate commerce among the states.

Commerce Clause.

Explanation:

The commerce clause, under Article I, Section 8, establishes the exclusive authority of Congress to regulate commerce among the states, just as the example briefly describes. The Congress has the power to regulate both international and national (between states) commerce, including the Indian Tribes.

explanation:

it was dumb and stupid town

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.