The United States has halted all border traffic at the busy crossing between San Diego and Tijuana, Mexico to prevent migrants from crossing border.
The mayor of Tijuana declares a humanitarian crisis in his border city and asks the UN for aid to deal with the approximately 5,000 Central American migrants camping out in the city.
As the numbers of immigrants swell on the US border pressure on resources grows.
Migrants gathered at the border as US President Donald Trump said he had given the military the authorisation to use lethal force if necessary on the border with Mexico.
About 6,000 Central Americans have reached the border cities of Tijuana and Mexicali. Now, more bands of migrants are making their way toward Tijuana, with around 10,000 expected.
The angry anti-migrant protests in Mexico have been fed by concerns raised by President Donald Trump's month-long warnings that criminals, gang members and even terrorists are in the group, despite the absence of any evidence to back those claims.
Mayor of Tijuana calls the migrants' arrival an "avalanche" that the city is ill-prepared to handle, calculating that they will be in border town for at least six months as they wait to file asylum claims.
Heads of state of Spanish- and Portuguese-speaking nations call for the development and assistance of countries migrants are fleeing. With about 3,000 migrants at the US border, Tijuana says the city is preparing for an influx that will last months.
The first wave of migrants in the caravan, which became a central theme of the recent US election, began arriving in Tijuana in recent days, and their numbers have grown each day.
US President Donald Trump says he'll start cutting aid to Honduras, Guatemala and El Salvador over their inability to stop citizens from migrating to the US. A caravan of thousands is currently making its way through Mexico towards the US border.
Trump had urged that the caravan be detained and repeated his call for stronger border security, writing on Twitter, "Our Southern Border is under siege."
"Without a wall there would be bedlam, I imagine," says US President Donald Trump as he inspects several prototype barriers of a controversial wall he wants to build on the border with Mexico.
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