Customs and Border Protection released photos and video of a long line of migrants standing patiently on a desert road's dirt shoulder after they were stopped.
U.S. Customs and Border Protection says a group of 376 Central American migrants illegally crossed the U.S. -Mexico border near Yuma on Monday. He said the biggest challenge the Yuma patrol faces is the "humanitarian problem", explaining that 87 percent of those apprehended are families and unaccompanied minors, and asked for better barriers along the border.
The largest single group of asylum-seekers to be taken into custody in the USA reportedly tunneled beneath a section of the border wall outside Yuma, Arizona.
Despite steel plates being welded to a barrier of bollards in a bid to prevent illegal crossings by people in vehicles, they have not provided much of a deterrent to those travelling on foot.
"In my 30 years with the Border Patrol, I have not been part of arresting a group of 376 people", CBP Yuma Border Sector Chief Anthony Porvaznik told ABC News.
The largest single group of asylum seekers ever to cross into the USA tunneled beneath the border wall near San Luis, Arizona, earlier this week before turning themselves in to the feds, a new report said Friday.
The group used multiple holes in an apparent effort to get everyone across the border quickly, Garibay said. "That's really unheard of".
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Since then, United States officials and Trump himself have suggested the withdrawal would be slower than initially thought . President Donald Trump said the group had been defeated there and that he would pull out all American forces.
In November, a group of around 80 migrants from Guatemala - primarily families - were apprehended by Border Patrol after climbing over the legacy landing mat border wall east of the San Luis Port of Entry. A group of 115 was found in the same area Thursday. She died at a hospital in El Paso, Texas.
The southwest Arizona desert is less remote but arrests have also sharply increased after years of relative quiet.
But while there has been a surge in the number of Central Americans seeking asylum in the USA in recent months, the number of arrests remains low by historical standards.
In the meantime, Democrats, who dominate the House of Representatives, have blocked Trump's funding requests for his border protection project, which involves a $5.7 billion investment in construction of physical barrier on the border, forcing the government into longest shutdown in United States history and furloughing hundreds of thousands of government employees without payment.
US President Donald Trump has said the situation at the US-Mexican border a "humanitarian crisis" and urged Democrats to approve funding for tightening border security.
The White House wants over $5 billion for the border wall, but Democrats have so far refused to cave in to the demands, President Trump's signature campaign issue.