"This report provides background information and issues for Congress regarding the U.S. role in the world, meaning the overall character, purpose, or direction of U.S. participation in international affairs and the country's overall relationship to the rest of the world. Some observers perceive that after remaining generally stable for a period of about 70 years, the U.S. role in the world is undergoing a potentially historic change. A change in the U.S. role in the world could have significant and even profound effects on U.S. security, freedom, and prosperity. It could significantly affect U.S. policy in areas such as relations with allies and other countries, defense plans and programs, trade and international finance, foreign assistance, and human rights. It could also have implications for future international order."
CRS Report for Congress, R44891
Congressional Research Service: https://crsreports.congress.gov/