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.

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gaius cassius longinus and marcus junius brutus, former enemies of julius caesar who'd joined the roman senate, led caesar's assassination, dubbing themselves "the liberators." and the second one is   the assassination of julius caesar was the result of a conspiracy by many roman senators led by gaius cassius longinus, decimus junius brutus albinus, and marcus junius brutus. they stabbed caesar (23 times) to death in a location adjacent to the theatre of pompey on the ides of march 15 march 44 bc.