Apresidential speechwriter who then took a job as a syndicated columnist and later returned as a domestic policy adviser to a member of congress illustrates

The revolving door

Explanation:

In politics, the revolving door is a term that refers to the movement of high-ranking personnel from the public sector to the private sector, and viceversa. In our example, we can clearly see this: a person holding a high-ranking public post (presidential speech writer) moves to the private sector (writing as a columnist), and later returns to the public sector again (domestic policy adviser to a member of Congress).

The revolving door is generally frowned upon by the public, as conflicts of interest may arise: people in the public may favour certain parties, expecting to be rewarded with a good paying job in the private sector once his term in public office ends; and conversely, people with vested private interests might take a public post, expecting to enact legislation or act in a way that will further their own private interests.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.

b or c im pretty sure