U.S. Army Short-Range Air Defense Force Structure and Selected Programs: Background and Issues for Congress [July 23, 2020] [open pdf - 2MB]
From the Document: "Congress is responsible for funding the Army, establishing rules for its regulation, and conducting oversight of a number of Army functions including manning, equipping, training, and readiness. With the growing state and non-state threats of unmanned aerial systems (UASs), cruise missiles (CM), rockets, artillery, and mortar (RAM), as well as traditional fixed and rotary wing aircraft, congressional oversight of the Army's ability to counter these threats could take on an even more important role. To help protect ground forces from these potential attacks in the near term, Congress has mandated the Army acquire four Israeli-developed Iron Dome batteries in both the John S. McCain National Defense Authorization Act for Fiscal Year 2019 and the Defense Appropriations Act for Fiscal Year 2019 (P.L. 115-232 and P.L. 115-245). There have, however, been Army concerns with Iron Dome, and some in Congress have expressed their dissatisfaction with both the Secretary of Defense and Secretary of the Army on the issue. With the Army's overall modernization plans for the total force and associated plans to rebuild SHORAD [Short-Range Air Defense] force structure, upgrade existing systems, and develop new systems, Congress might have to decide if the Army's SHORAD modernization effort is affordable and if the Army is allocating sufficient resources towards the end goal."
CRS Report for Congress, R46463
Congressional Research Service: https://crsreports.congress.gov/