Simplify the following text for a Grade 10 native English-speaking person.
Original: In the federal government of the United States of America , there is one Secretary of State , the most senior political appointee responsible for foreign policy ( that is , equivalent to a Foreign Minister ) .
Simplified: In the United States federal government , the Secretary of State is the head of the United States Department of State , and is responsible for foreign policy . In most other countries , this official is called the foreign secretary or foreign minister .