Home2004 Treaties and Agreements ...El Salvador (04-1217) – Agreement Regarding the Cooperating Nation Information Exchange System hide El Salvador (04-1217) – Agreement Regarding the Cooperating Nation Information Exchange System TIAS Office of Treaty Affairs December 17, 2004 Law Enforcement: Cooperating Nation Information Exchange System Agreement effected by exchange of notes at San Salvador November 29 and December 17, 2004; entered into force December 17, 2004. Download attachment [596 KB] Tags El Salvador Law Enforcement Treaties