"Successive Administrations have described the U.S. relationship with Nigeria, Africa's largest producer of oil and its largest economy, to be among the most important on the continent. The country is Africa's most populous, with more than 200 million people, roughly evenly divided between Muslims and Christians. Nigeria, which transitioned from military to civilian rule in 1999, ranked for years among the top suppliers of U.S. oil imports, and it is a major recipient of U.S. foreign aid. The country is the United States' second-largest trading partner in Africa and the third-largest beneficiary of U.S. foreign direct investment on the continent. Nigerians comprise the largest African diaspora group in the United States. [...] U.S.-Nigeria relations under the Trump Administration appear generally consistent with U.S. policy under the Obama Administration. Both Administrations have supported reform initiatives in Nigeria, including anticorruption efforts, economic and electoral reforms, energy sector privatization, and programs to promote peace and development. Congress oversees more than $500 million in U.S. foreign aid programs in Nigeria and regularly monitors political developments; some Members have expressed concern with corruption, human rights abuses, and violent extremism in Nigeria."
CRS Report for Congress, RL33964
Congressional Research Service: https://crsreports.congress.gov/