Day 658: FGR Advances US Evidence Request; Senator Inzunza Vows to Stay in Senate; Mayito Flaco–Zetas Alliance Reported

On Day 658 of the Sinaloa cartel civil war — May 12, 2026 — three converging developments continued to define the US-Mexico diplomatic standoff and La Mayiza's strategic consolidation. Mexico's FGR continued the formal evidentiary review process following its May 10 announcement that US extradition documentation for Governor Rocha Moya and nine co-defendants failed to meet Mexican legal standards. The FGR's stated intention to formally request the complete evidentiary package from Washington set up a procedural framework under which Mexico could pursue domestic charges without yielding to the US extradition process — a sovereign legal maneuver widely interpreted as indefinite deferral of extradition. Senator Enrique Inzunza Cázares, one of the ten indicted MORENA co-defendants, publicly confirmed he would continue serving in Mexico's Senate while mounting his legal defense — a defiant posture signaling that the MORENA political apparatus is holding firm against US pressure 13 days after the SDNY indictment. Inzunza's continued service contrasts with Governor Rocha Moya and Culiacán Mayor Gámez, who took temporary leave. On the cartel front, intelligence reporting from Latin Times indicated that Ismael 'Mayito Flaco' Zambada Sicairos — the emerging La Mayiza leader — reached a reported agreement with Zetas-affiliated armed groups to counterbalance the Chapitos-CJNG alliance that persisted despite El Mencho's February 2026 death. If confirmed, the Zetas–La Mayiza arrangement would further entrench La Mayiza's ~90% territorial dominance in Sinaloa by closing off the Chapitos' strategic depth along the northeastern corridor toward Durango and Chihuahua. The extradition standoff entered its 13th day with no resolution in sight; the USMCA mandatory joint review, scheduled for June 2026, remains Washington's most powerful trade leverage mechanism. Running conflict toll: ~2,425+ since September 9, 2024.