National Security Council: Background and Issues for Congress [Updated June 3, 2021] [open pdf - 1MB]
From the Summary: "On February 4, 2021, President Joseph R. Biden signed National Security Memorandum (NSM)- 2, 'Renewing the National Security Council System.' In it, the Biden Administration articulates how it intends to manage and coordinate national security issues among relevant departments and agencies. This report offers a brief historical overview of the formation of the National Security Council (NSC), clarifies the terms and structures associated with it, and provides a table of the NSC's current composition."
CRS Report for Congress, R44828
Congressional Research Service: https://crsreports.congress.gov/