Who is NOT listed as a position managed in the U.S. government roles provided?

The role of Secretary of State is indeed a high-ranking position within the U.S. government, responsible for foreign affairs and representing the U.S. to other countries. However, the question requires identifying a position that is not explicitly managed or referred to within the context provided.

When considering the options, the House Majority Leader and the Speaker of the House are explicitly legislative positions within the structure of Congress, specifically in the House of Representatives. The Department of Homeland Security represents an organized governmental agency rather than a singular position; it oversees various roles and functions.

Thus, the Secretary of State stands out as a distinct position from the others, which are either legislative leadership roles or an executive department. This distinction clarifies why this option is the correct answer in relation to identifying a role that does not align with the others presented.