Border apprehension numbers fell 28 percent in June, partly due to a recent crackdown, but also because of soaring summer temperatures.
Migrants can now only request asylum in the U.S. if they can show proof that their asylum request was denied by a third country while en route to America; that third country is usually Mexico.
The federal government has chosen a military base in Oklahoma as the location for a new temporary shelter to house migrant children.
Border Patrol agents dropped off asylum-seeking migrants in New Mexico's second most populous city for the second day in a row Saturday, prompting Las Cruces city officials to appeal for donations of food and personal hygiene items and a state medical program to seek volunteers to provide health assessments of migrants.
Amid record numbers of apprehensions, President Donald Trump threatened to close the southern border in a tweet for the third time since Thanksgiving.
Eight immigrant families demanded millions of dollars in damages Monday from the Trump administration for separating them.
Migrants are packed into an extremely unsanitary and tight space where lice infestations and respiratory infections are rampant.
Migrants hoping to apply for asylum in the US must put their names on a waiting list that already had 3,000-plus people on it before the caravan arrived.
U.S. border agents fired tear gas on hundreds of migrants protesting near the border with Mexico after some of them attempted to breach the fencing.