The primary purpose of an  embassy  is to assist American citizens who travel to or live in the host country. U.S. Foreign Service Officers also interview citizens of the host country who wish to travel to the United States for business, education, or tourism purposes.  Embassy  staff interact with representatives of the host government, local businesses, nongovernmental organizations, the media and educational institutions, as well as private citizens to increase understanding of the United States and its policies and to collaborate on shared interests.  Embassy  staff analyze the political and economic situation in the host country and report back to the  Department of State  on issues that affect the United States. They help U.S. businesses find partners and customers and may train the host government’s police and military to support better security in the country. They also sponsor educational, professional and cultural exchanges to introduce emerging and established leaders to the United States and to promote ties between U.S. and foreign students, academics, scientists, entrepreneurs, political, religious, and civil society figures. 

While Americans work at embassies and consulates, most of the staff comes from the host country. These employees are essential to the success of any  embassy  because they know the local culture, have essential skills, or are well connected to government and civil society leaders.