Even though the government was partially shut down for 35 days, Border Patrol agents were still required to go out in the brush and on the field to secure the border, even without a check.
"During the 35-day shutdown, The Rio Grande Valley sector remained one of the busiest sectors in the nation for marijuana seizures and alien apprehensions," said Border Patrol Agent, Marcelino Medina.
Agents say while on furlough, in the RGV alone, 17,000 undocumented immigrants were captured trying to illegally cross into the United States.
Our cameras found a 23-year-old woman named Shayney Posadas from Guatemala walking with another 16-year-old boy from Honduras.
"I took a bus, then I was dropped off here by the brush and I just started walking to see how far we would make it," said Posadas.
CBS 4 asked who dropped Posadas off, but she did not answer.
But it isn't simply constant crossings agents are catching.
"During the shutdown, agents seized nearly 900 pounds of cocaine and actually seized over 15,000 pounds of marijuana," said Medina. "19 stash houses were also dismantled."
And it's not slowing down.
"Our December numbers are not yet released, but for October, November 2018, we're averaging 20,000 illegal aliens a month," said Medina.
During our ride along, more immigrants were found running away from agents.
A group of 26 family units were found near Mission.
"It's hard, we walked, we rode a bus, walking with my kids, we left our country 20 days ago," said Neri Alvarado from Honduras who traveled illegally with his 16-year-old son because he says there's no jobs or money back home.
"It's an American dream to come out and provide for our family," said Alvarado, who says he plans to work in the U.S.
Agents say regardless of the weather or the situation, illegal activity isn't slowing down, so neither will they.
"The Border Patrol agents here in the Rio Grande Valley and across the nation took an oath," said Medina.
Regardless of the possible upcoming government shutdown once again, meaning no pay for these agents.
"We're here to secure the border and this is what we do."