Answer:
Foreign Policy is policy abroad (outside the US) while domestic policy is policy here in America.
The main goals of US foreign policy are to stay true and faithful to our allies to maintain peace and order where need be.
The role of the US Sec of State is to represent the United States and its values to other countries across the world while overlooking the US department of state (which overlooks our foreign embassies, the US foreign service, etc).
