Trump has ordered a significant increase in counter-narcotics and border control operations, which could draw the armed forces into another resource drain and a controversial mission.
The protest group said it was the "first warning" for President Andrés Manuel López Obrador to boost controls at the border.
Meanwhile, the U.S. is expected to issue tighter border restrictions.
"The administration is using the pandemic as a pretext," said Human Rights First's Director of Refugee Protection Eleanor Acer.
The rule, expected to be announced over the next two days, will reportedly see all asylum seekers, undocumented foreigners rejected at the border points of entry. They will not be detained.
The rule is expected to go into effect on April 8 this year.
The 19-year-old, a U.S. citizen from San Juan in Texas, was driving a Ford Mustang when he was stopped by CBP officers on the Anzalduas-Reynosa International Bridge on his way home.
"It's a sobering realization to note that this is something that is clearly a violation of international human rights law and it's happening in the United States," said Dr. Ranit Mishori.
U.S. Customs and Border Protection said officers intercepted a tractor-trailer at the Pharr International Bridge cargo facility in Pharr, Texas.
"Today's decision is a tremendous victory for communities everywhere fighting courageously to uphold human dignity," said Alvaro Huerta, staff attorney at the National Immigration Law Center.
Lawyers for the teenager have questioned how President Donald Trump can claim to support the Venezuelan people while his government allegedly separates fleeing families at the border.
A section of the wall blew over into Mexico during ongoing construction.
"The wall is ultimately and very nicely being paid for by Mexico," President Donald Trump claimed.
In 2019, nearly two million Americans traveled overseas for "just about every imaginable type of medical treatment," according to Patients Beyond Borders.
Families are sending children across the border alone in the hope they will be allowed into the U.S. as unaccompanied minors and spared the danger of Mexican border towns.
On Saturday, one year will have passed since the widely-condemned 'Remain in Mexico' policy was brought into place.
Thousands more asylum seekers are trying to make their way to Mexico from Honduras.
Under the "safe third country" deals, the U.S. has been sending asylum seekers to Guatemala, with Honduras and El Salvador to follow.
Democratic Sen. Patrick Leahy branded the bid "an unconstitutional waste of money."
Experts say the building of the 30 foot high border wall has depleted groundwater levels in Arizona, putting several endangered and threatened species at further risk of being wiped out.
After nine Mormons—three women and six children—were murdered by the side of a Mexican road in November, a national outcry erupted. Now a police chief has been arrested over his ties to the crime.
Defense Department documents about the U.S. southern border have historically been unclassified. That's changed now.
A tractor trailer was being driven by a man down Interstate 85 when it was stopped by officers in Cleveland County, North Carolina, for traffic violations.
While President Donald Trump administration's ignores their requests, up to 70 physicians have vowed to keep returning to border stations until they're allowed to give life-saving flu shots, participants told Newsweek.
Officers from the U.S. Customs and Border Protection thwarted the human smuggling attempt at the San Ysidro port of entry.
As of November 22, the Trump administration has seen 86 miles of a "border wall system" built.
"The wall is electrified so that if anyone touches it, we know exactly what's happening. We can be there within minutes."
"We really learned the hard way in Germany that walls shouldn't be a political solution," said Philip Husemann, the managing director of Die Offene Gesellshaft.
A privacy rights group has asked a judge to force the DHS to share information on its use of DNA testing on migrant families at the U.S.-Mexico border.
More than 55 percent of southwest residents said they disapprove of President Donald Trump's handling of issues at the U.S.-Mexico border.