To what extent did politics complicate the issue of slavery in both the American colonies and the United States after the Revolution?

The questions are:

To what extent did politics complicate the issue of slavery in both the American colonies and the United States after the Revolution?

How did politicians and political acts impact, expand, or limit the institution of slavery throughout its existence in North America?

Construct an essay where you evaluate and ultimately judge the impacts specific politicians or political decisions made with regard to slavery in American history.