Simplify the following text for a Grade 12 native English-speaking person.
Original: The United States Department of Agriculture ( informally the Agriculture Department or USDA ) is the United States federal executive department responsible for developing and executing U.S. federal government policy on farming , agriculture , and food .
Simplified: The United States Department of Agriculture ( also called the Agriculture Department , or USDA ) is a United States Federal Executive Department ( or Cabinet Department ) . Its purpose is to develop and execute policy on farming , agriculture , and food .