Scores of pregnant women travelled with the caravan through Mexico before reaching the US border.
The Trump administration's fierce crackdown on the "migrant caravan" has caused the 6,000-strong group to stall in Tijuana, Mexico; with many choosing to return home rather than wait months for their asylum claims to be processed by American authorities.
"Since that caravan formed in mid-October, we've seen 90,000 people come to our border, 85 percent of those crossing illegally between ports of entry, and all lured by the fact that our legal framework has huge gaps that create the opportunity to stay in the USA while awaiting your court hearing, even if they don't have a lawful permission or protection claim". "We'll figure out what to do in a couple of days".
The border crossing - which Tijuana residents use to reach jobs and shopping on the US side and USA tourists use to head south - was closed briefly last weekend after some migrants tried to rush across.
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At least one person in Mexico was seen helping adult members of the family group over the top of the wall, and then dropping the children to the waiting family members below, according to the release.
McAleenan also noted that criminals leading these caravans give the migrants misleading information about the muddy asylum process in the USA, meaning they profit off migrant families because of the weak immigration laws.
US inspectors at the main border crossing in San Diego are processing up to about 100 asylum claims day, leaving thousands of migrants waiting in Tijuana.
Homeland Security said the section of wall the children were dropped from is a legacy fence already slated for replacement. U.S. Border Patrol agents had the territory between the two barriers heavily covered.
Last year, more than 26,000 illegal immigrants were arrested in addition to almost 11,000 pounds of marijuana and 3,000 pounds of cocaine that were seized. And his supporters - that is 80 to 90 percent of Republican voters - expect Congress to act to fulfill that pledge. But they also warned they would stop offering food and medical services at the Benito Juarez sports complex. The toll-free Capitol Switchboard is (1-866-220-0044) call TODAY.