U.S. Special Operations Forces (SOF): Background and Issues for Congress [Updated December 14, 2020] [open pdf - 1005KB]
From the Summary: "Special Operations Forces (SOF) play a significant role in U.S. military operations and, in recent years, have been given greater responsibility for planning and conducting worldwide counterterrorism operations. U.S. Special Operations Command (USSOCOM) has about 70,000 Active Duty, National Guard, and reserve personnel from all four services and Department of Defense (DOD) civilians assigned to its headquarters, its four service component commands, and eight sub-unified commands. [...] On November 18, 2020, Acting Secretary of Defense Christopher C. Miller announced that he was implementing the reforms outlined in Section 922 of the Fiscal Year 2017 National Defense Authorization Act by 'elevating Special Operations forces to a level on par with military departments as authorized and directed by Congress.' Potential issues for Congress include policy concerns relating to Acting Secretary of Defense Miller's decision to elevate the Assistant Secretary of Defense for Special Operations and Low Intensity Conflict (ASD [SOLIC]) within DOD and DOD's review of DOD and USSOCOM support to the Central Intelligence Agency (CIA)."
CRS Report for Congress, RS21048
Congressional Research Service: https://crsreports.congress.gov/