... it seems that "Mexico First" would mean protecting citizens from the psychotic monsters that run the cartels, not hugging the psychotic monsters that regularly leave the bodies of innocent citizens in the streets.
The total saturation of corruption in law enforcement coupled with the heavily armed manpower of the cartels probably means the Mexican government is outgunned. Historically, appeasement of an aggressor has never been a successful strategy. Just ask Neville Chamberlain.
It would also seem that, if an official is still alive, then he's on the take.

by Anna Grace
26 Dec 2018

The Mérida Initiative celebrates its tenth anniversary this year. Yet since it began providing funding for security in Mexico, problems to do with violence and institutionalized corruption have worsened, suggesting flaws in both the approach and implementation of the Initiative.

The origins of the Mérida Initiative, a bilateral security cooperation agreement between Mexico and the United States, hark back to 2007 when former president Felipe Calderón appealed to the administration of President George W. Bush for assistance in tackling drugs and arms trafficking.

Since signing the agreement, the Mexican government has received nearly $2.9 billion in assistance from the United States. This assistance has supported the purchase of military equipment; training for judiciary personnel and improvement of courtroom infrastructure; military training along Mexico’s southern border; and the implementation of crime prevention programs.

Critics state that the Initiative focuses too heavily on the use of military forces to tackle organized crime. US aid to the program supported former President Felipe Calderón’s war on drugs, which led to a spike in homicide rates across the country that continue to rise today.

More:
https://insightcrime.org/news/analysis/merida-initiative-failings-violence-corruption/

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Mexico’s Long War: Drugs, Crime, and the Cartels
Violence continues to rage more than a decade after the Mexican government launched a war against drug cartels.

WRITTEN BY
CFR.org Editors
UPDATED
Last updated September 7, 2022 2:45 pm (EST)

Introduction

Mexican authorities have been waging a deadly battle against drug cartels for more than a decade, but with limited success. Thousands of Mexicans—including politicians, students, and journalists—die in the conflict every year. The country has seen more than 360,000 homicides since 2006, when the government declared war on the cartels.

The United States has partnered closely with its southern neighbor in this fight, providing Mexico with billions of dollars to modernize its security forces, reform its judicial system, and fund development projects aimed at curbing migration at Mexico’s southern border. Washington has also sought to stem the flow of illegal drugs into the United States by bolstering security and monitoring operations along its border with Mexico.

Mexican drug trafficking organizations (DTOs)—sometimes referred to as transnational criminal organizations—dominate the import and distribution of cocaine, fentanyl, heroin, marijuana, and methamphetamine in the United States. Mexican suppliers are responsible for most heroin and methamphetamine production, while cocaine is largely produced in Colombia and then transported to the United States by Mexican criminal organizations. Mexico, along with China, is also a leading source of fentanyl, a synthetic opioid up to fifty times more potent than heroin. The amount of fentanyl seized by Mexican authorities nearly quintupled between 2019 and 2020.

More:
https://www.cfr.org/backgrounder/mexicos-long-war-drugs-crime-and-cartels