"Major events that are considered to be nationally significant may be designated by the President--or his representative, the Secretary of the Department of Homeland Security (DHS)-- as National Special Security Events (NSSE). Beginning in September 1998 through February 2008, there have been 28 events designated as NSSEs. Some of these events have included presidential inaugurations, presidential nominating conventions, major sports events, and major international meetings. The U.S. Secret Service (USSS) is the lead federal agency responsible for coordinating, planning, exercising, and implementing security for NSSEs, and was designated as the lead agency in P.L. 106-544. This report provides information on USSS legislative authority for NSSEs, NSSE designation funding and training, and NSSE funding. This report will be updated when congressional or executive branch actions warrant."
CRS Report for Congress, RS22754