Thousands of migrants began arriving in Tijuana about 10 days ago and have been housed since then in squalid conditions in a community sports center that has been converted into a makeshift shelter.
Protesters march along the USA side of the southern border during a rally to show solidarity with the migrant caravan on Sundayy, November 25, as US immigration agents deployed tear gas to disperse hundreds of migrants who rushed the border.
Hundreds of migrants approaching the California border from Mexico were enveloped with tear gas Sunday after several tried to make it past fencing and wire separating the two countries.
"We ran", a 23-year old Honduran woman told the Associated Press, "but when you run the gas asphyxiates you more".
Children screamed and coughed in the mayhem of the tear gas.
Hours earlier, The Washington Post quoted her as saying that the incoming administration of Andres Manuel Lopez Obrador had agreed to allow migrants to stay in Mexico as a "short-term solution" while the USA considered their applications for asylum.
Trump wrote on Twitter on Sunday that it "Would be very SMART if Mexico would stop the Caravans long before they get to our Southern Border, or if originating countries would not let them form".
"It is critical that we demonstrate the mass sentiment in support for migrants and refugees, and demand the recognition of their legal right to seek asylum", they say.
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USA military personnel and Customs and Border Protection officers gather along the southbound lanes of the San Ysidro port of entry, November 25, 2018, in San Diego, California, at the US border with Mexico.
According to the ministry, no casualties have been registered among migrants following their attempt to illegally enter the United States, and the situation at the border is under control.
President Trump threatened Monday to close the southern border "permanently" unless Mexico sends asylum-seekers - many of whom he described as "stone cold criminals" - back to where they came from. She had signed up for an interview with a USA asylum officer, the first step in the asylum application process - but the surge of migrants with the caravan meant that she would be waiting for weeks.
Videos posted on Twitter showed large numbers of migrants dashing across a shallow concrete waterway towards the border.
At that point, before the group had reached the border, U.S. Customs and Border Protection officers who had gathered on the other side of the fence launched canisters of what a Reuters reporter said felt and smelled like pepper spray.
"People had thought that they were going to open the gates, but that was a lie", Caballero said. "We want to see if they'll give us permission to go to the USA", she said. "Congress, fund the WALL!" he added.
The fate of the migrant caravan has become a heated political debate in the United States, with Trump and his supporters claiming that secure borders take priority over accepting asylum seekers. It said that 1,906 of those who have returned were members of the recent caravans. President Enrique Pena Nieto offered thousands of Central Americans asylum on October 26 if they agreed to remain in southern Mexico.