The Trump administration governed the United States from January 20, 2017, to January 20, 2021, under the leadership of President Donald Trump. Its tenure was characterized by major policy changes in areas such as tax reform, trade negotiations, deregulation, immigration enforcement, and foreign policy. The administration pursued an 'America First' agenda, reshaping U.S. relations with allies and rivals alike, and implemented economic measures aimed at boosting domestic manufacturing and reducing federal oversight.