Defense Secretary Luis Cresencio Sandoval said that National Guard members have been trained in police procedures, will respect human rights, and will use force in a "reasoned and proportional" manner.
Maintaining peace and security is Lopez Obrador's biggest challenge: there was a record of 33,341 homicides in Mexico in 2018, the highest number of deaths since the government began tracking murders in 1997.
More than 250,000 people have been murdered since 2006, the year Mexico's military was deployed to combat the cartels. More than 40,000 people have vanished during that same period.
Lopez Obrador said that the initial 70,000 members would be deployed to 150 regions across Mexico, and eventually, 150,000 personnel will cover most of the country.