This legislation directs the Secretary of State, in coordination with the Attorney General, to negotiate and establish a binational rapid response protocol with the Government of Mexico. The primary purpose of this protocol is to ensure timely coordination between U.S. and Mexican authorities when responding to and investigating serious crimes committed against United States citizens in Mexico. These serious crimes include homicides, kidnappings, disappearances, and violent acts involving organized criminal groups. The bill emphasizes the need for enhanced binational coordination due to findings that current investigations can be delayed or incomplete, hindering justice for victims. The protocol is intended to include several key elements, such as: Mechanisms for prompt notification of relevant authorities. Secure and reliable communication channels . Procedures for timely securing of crime scenes and evidence protection . Standards for preserving and documenting evidence to support potential prosecutions. Facilitating the timely sharing of investigative leads, intelligence, and forensic information. Designating points of contact for coordination and victim communication, including support for victims and their families. Opportunities for joint training and planning. The Secretary of State is required to submit regular reports to Congress on the progress of negotiating the protocol and, once established, on its implementation and effectiveness. The bill clarifies that it does not limit the sovereignty of either nation, require Mexico to adopt inconsistent investigative procedures, or alter existing U.S. law enforcement authorities.