From the Overview: "Israel (see 'Appendix A' for a map and basic facts) has forged close bilateral cooperation with the United States in many areas. For more background on aid, arms sales, and missile defense cooperation, see CRS [Congressional Research Service] Report RL33222, 'U.S. Foreign Aid to Israel,' by Jeremy M. Sharp. U.S.-Israel security cooperation--a critical part of the bilateral relationship--is multifaceted. U.S. law requires the executive branch to take certain actions to preserve Israel's 'qualitative military edge,' or QME, and expedites aid and arms sales to Israel in various ways. A 10-year bilateral military aid memorandum of understanding (MOU)--signed in 2016--commits the United States to provide Israel $3.3 billion in Foreign Military Financing (FMF) and to spend $500 million annually on joint missile defense programs from FY2019 to FY2028, subject to congressional appropriations. The MOU anticipates possible supplemental aid in emergency situations such as conflict. In March 2022, Congress appropriated $1 billion in supplemental funding through FY2024 for the Iron Dome anti-rocket system as a response to the system's heavy use during a May 2021 conflict between Israel and Gaza Strip-based groups such as Hamas and Palestine Islamic Jihad (PIJ) (both of which are U.S.-designated terrorist organizations)."
CRS Report for Congress, R44245
Congressional Research Service: https://crsreports.congress.gov/