U.S.-China Strategic Competition in South and East China Seas: Background and Issues for Congress [Updated January 28, 2020] [open pdf - 2MB]
From the Introduction: "This report provides background information and issues for Congress regarding U.S.-China strategic competition in the South China Sea (SCS) and East China Sea (ECS). In an international security environment described as one of renewed great power competition, the South China Sea (SCS) has emerged as an arena of U.S.-China strategic competition. U.S.-China strategic competition in the SCS forms an element of the Trump Administration's more confrontational overall approach toward China, and of the Administration's efforts for promoting its construct for the Indo-Pacific region, called the Free and Open Indo-Pacific (FOIP)."
CRS Report for Congress, R42784
Congressional Research Service: https://crsreports.congress.gov/