President Donald Trump on Monday sent a message of solidarity to Mexico City after a Mexican president said the United States should move its American-built border wall.
The president on Monday tweeted that the wall is a “sovereign right,” saying that it’s a matter of national sovereignty and should be respected.
Mexico’s president, Enrique Pena Nieto, called the wall a “very good idea.”
The Mexican government said Monday that it would begin construction on a 1,200-mile (1,860-kilometer) wall, which is supposed to cover most of the southern border between the two countries.
Trump has vowed to build a much smaller wall.
Trump has made a number of other threats against Mexico, which has a population of about 8 million and has struggled to integrate a growing number of migrants from Central America, including many from Mexico.
The Mexican government has been pressing Trump to make good on his threats to move the border wall to Mexico, but Trump has said he doesn’t want to do it.
Mexico’s top diplomat, Mexico City Mayor Miguel Angel Osorio Chong, on Monday said Trump would “go to war” with Mexico if he were to move ahead with plans to build the wall.