Railing going up between sections of the border wall south of Donna is causing concern for some people who say it's a sign that work on the border wall has resumed.

While U.S. Customs and Border Protection officials say the guardrails help with flooding, some migrant advocates say it serves the same purpose as a wall.

"It's not guardrails because when you go up close, you can see that there's a 12-foot drop and another 6-foot steel post on top of it, " Roberto Lopez with the Texas Civil Rights Project said. "This year alone, several migrants have died trying to climb the border wall. These are individuals who are fleeing climate change and political instability that we, the U.S., caused. "

Lopez said the levees along the border do not need guardrails for repairs. He says the border wall's damage to the levees should be addressed, not the other way around.

In a statement, CBP said the guardrails are "designed to protect agents, first responders, and anyone else who needs access to the levee area from accidentally going over the concrete levee— particularly at night when it can be very dangerous."