Mexico has launched a smartphone application that will allow Mexican migrants to alert their relatives and the nearest consulate instantly if U.S. Immigration agents detain or arrest them. Officials announced this on Friday.

What it means: The announcement was part of a warning by the Mexican government, led by President Claudia Sheinbaum, that Mexico would defend the rights of Mexicans living in the U.S. despite President-elect Trump’s plans to deport millions of Mexicans.

Zoom in: Mexico’s Foreign Secretary Juan Ramon de la Fuente announced at a recent press conference that an “emergency notifications” app would be available in January.

De la Fuente stated, “I personally attended several public meetings where the main message was to tell our fellow Citizens that they are not alone.

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Zoom out: De la Fuente stated that Mexico’s Know Your Rights program would be part of an immediate response to enforcement scenarios, or “other intimidating actions.”

Mexico’s Legal Protection Program includes 329 legal advisers at all 53 U.S. consulates, as well as voluntary support from law firms and consultants across the country.

Trump’s mass deportation plans will include U.S. Citizens who are children of undocumented migrants and the construction of new detention centers around the country.

Concerned advocacy groups have expressed alarm at the statements of more than two dozen Republican Governors who said they would use “state law enforcement” or the National Guard to assist in mass deportations.

Mexico encourages all Mexicans with children born in America to register them at the consulates.

Not everyone has yet done so. De la Fuente stated that registering with our consulates is a must, as it allows us to offer legal protection in the event of an emergency.

Reality Check: Mass deportations are likely to encounter many procedural roadblocks. The estimated cost of $150 billion to 350 billion dollars is also high.

The United States does not currently have enough holding cells for the millions of people who are in deportation procedures.

The American Civil Liberties Union tells Axios they plan to monitor temporary holding centers. They believe that the facilities will be inhumane, poorly constructed and unsanitary.

Flashback: Trump claimed last month that he spoke with Sheinbaum regarding stopping immigration into the U.S.

Trump claimed in a Truth Social posting that he and Sheinbaum had “a wonderful discussion” and that she “agreed on stopping Migration through Mexico into the United States effectively closing our Southern Border.”

Sheinbaum stated in a press release that she and Trump had discussed Mexico’s migration strategy and she informed him that the Central American caravans were not coming to the northern border because they are being cared for by Mexico.

Bottom line: any mass deportations will involve expelling people to Mexico. This would be met with opposition because it would overwhelm Mexico’s ability to manage the flow.