I’m far from an expert in the U. S. Federal government, but if I were to study one part of it more, it would be the Department of State. Even though State does not have the budgets of others like the Department of Defense, it deals with intellectual topics that most others do not.
In lay terms, State’s goals have to do with guiding international relations in a direction that is in the interests of the U. S. There is a constant debate as to what those interests are and how the diplomatic arm of government can achieve them.
The role of religion comes up often. President Carter, it was said, got on well with religious regimes because leaders with deep faith understood each other, even if they did not have the same faith. How well he got along with them is probably disputed.
Hillary Clinton is reportedly very religious, a Methodist. What she worked on while Secretary of State might have reflected her Methodism.
Instead of the traditional State Department policy of dealing almost exclusively with national officials, or, their political opponents, she placed staff in embassies who were specifically tasked with reaching religious leaders in various countries. These religious leaders are sometimes at odds with a country’s government so the practice is a delicate one.
Nevertheless, from this distance is seems like a good way to keep a finger on the pulse of a country. Perhaps we will not be blindsided with 9/11’s and such under her new practice.