From the Document: "Since the end of the Second World War, successive U.S. Administrations and many Members of Congress have supported a close U.S. partnership with Europe. Often termed the 'transatlantic relationship,' the U.S.-European partnership encompasses the NATO alliance, relations with the European Union (EU), and extensive bilateral political and economic ties. Despite periodic tensions over the past 70 years, U.S. and European policymakers have valued the transatlantic partnership as serving their respective geostrategic and economic interests."
CRS In Focus, IF11094
Congressional Research Service: https://crsreports.congress.gov/