Mexican Congress Hears Corpse Claims and Pilot Testimony

Brief

On September 12, 2023, the Mexican Congress heard testimony on UAP from Jaime Maussan and former U.S. Navy pilot Ryan Graves as part of debate over the Aerial Space Protection Law — legislation that, if passed, would constitute the first formal national acknowledgment of alien life on Earth. Maussan presented two alleged non-human corpses and videos of Mexican pilots encountering fast-moving aerial objects; Graves publicly repudiated the display, calling it an 'unsubstantiated stunt' that undermined credible pilot testimony. The embassy noted scientists had previously discredited similar physical specimens Maussan had presented. The UAP section occupies one of twelve items in a routine weekly blotter distributed to the NSC, CIA, DIA, DNI, DHS, DOJ, USNORTHCOM, and USSOUTHCOM.

Metadata

Agency

Department of State

Release

5/8/26

Incident

9/12/03

Location

Mexico

Type

PDF • .pdf

Length

7 pages

Classification

UNCLASSIFIED

Programs

Aerial Space Protection Law

Tags

alleged non-human remains, fast-moving flying objects, pilot visual encounter, pilot encounter video, Mexico, 2023, Aerial Space Protection Law, congressional testimony, Maussan, Ryan Graves

Key points

• The hearing was convened to debate language in the Aerial Space Protection Law; if approved, the law would make Mexico the first country to formally acknowledge the presence of alien life on Earth.p.5
• Witnesses included Mexican journalist Jaime Maussan and former U.S. Navy pilot Ryan Graves, who had previously testified before the U.S. Congress on UAP.p.5
• Two alleged alien corpses and videos of Mexican pilots' encounters with fast-moving flying objects during flight were presented to Congress.p.5
• Ryan Graves publicly stated the corpse display took away from his and other pilots' UAP experiences and characterized Maussan's presentation as an 'unsubstantiated stunt.'p.6
• Scientists had previously discredited earlier alleged alien remains Maussan presented as evidence of alien life — providing an explicit prior-credibility assessment within the diplomatic record.p.6
• The cable is classified UNCLASSIFIED and was released in full, with no redactions applied to any of its seven pages.p.1
• Distribution included routine transmission to the National Security Council, CIA, DIA, DNI, DHS, DOJ, USNORTHCOM, and USSOUTHCOM — standard protocol for politically significant host-country events, not a UAP-specific elevation.p.7

Verbatim

• Congress heard testimony on unidentified aerial phenomenon (UAP) September 12, from experts including from Mexican journalist Jaime Maussan and former U.S. Navy pilot Ryan Graves, who previously testified before the U.S. Congress.

  p.5

• The hearing was to debate language on UAP in the Aerial Space Protection Law which, if approved, would make Mexico the first country to formally acknowledge the presence of alien life on Earth.

  p.5

• Experts also presented to Congress two alleged alien corpses and videos of Mexican pilots' encounters with fast-moving flying objects during flight.

  p.5

• Scientists have discredited previous alleged alien corpses Maussan presented as evidence of alien life.

  p.6

Most interesting

• The Aerial Space Protection Law, had it passed, would have made Mexico the first sovereign nation to formally recognize alien life on Earth — a claim debated against a backdrop of disputed physical evidence on the congressional floor.
• Ryan Graves, one of the most credible UAP witnesses to appear before the U.S. Congress, actively distanced himself from Maussan's presentation in real time, creating a public rift among the hearing's own witnesses.
• The cable's subject line frames the UAP section as 'Mexican Congress Hears Testimony on Alien Life' rather than UAP — one of the few State Department cables in this disclosure tranche to use the word 'alien' in the subject.
• The war.gov listing contains typographical date errors ('September 12, 20023' and an incident year of 2003) that are contradicted by the cable text itself, illustrating how metadata errors can complicate disclosure archiving.
• Figure 1 on page 6 — a Reuters photograph of Maussan presenting the alleged remains — is the only visual element in the cable and the sole photographic record of the display cited in official U.S. diplomatic reporting.
• The cable was drafted by Embassy political officer Sergio A. Moreno and cleared by eight officers across POL, ECON, EXEC, INL, PD, and CONS divisions, reflecting the multi-section editorial oversight standard for weekly blotters rather than any elevated UAP-specific review chain.