A popular video clip shows two climbers using a ladder and rope to successfully cross a border wall that Donald Trump claimed was “impossible to climb.”

In a visit to the southern border in September, Trump claimed that portions of newly built wall along the U.S.-Mexico border near Tijuana were reinforced and even “championship mountain climbers” were unable to cross them.

A video posted by photojournalist J. Omar Ornelas, however, shows two individuals using a ladder and other tools to cross the border successfully.

Trump also noted the recent throttle in immigration numbers and credited the newly built wall. “People aren’t even coming up,” Trump said. “You see the numbers are going way down, and we’re not doing a catch and release anymore.”

The video of the climbers was widely shared as critics of Trump’s border wall policy championed the effort of the migrant climbers to disprove the president’s claim. Several hundred miles of border wall are currently under construction at the southern border, though no new fencing has been completed since Trump took office.

While the “impossible to climb” claim was disproven, the Department of Homeland Security claims the wall’s efficacy cannot be understated. “When it comes to stopping drugs and illegal aliens from crossing our borders, border walls have proven to be extremely effective,” a statement said. “Border security relies on a combination of border infrastructure, technology, personnel and partnerships with law enforcement at the state, local, tribal, and federal level. For example, when we installed a border wall in the Yuma Sector, we have seen border apprehensions decrease by 90 percent.”

This is the newly replaced wall along the US/MEXICO border. #TheWall pic.twitter.com/MIrD3HhVsE

— J. Omar Ornelas (@fotornelas) December 4, 2019

As you could imagine, Twitter had a field day:

Wow, can you believe that smugglers have figured out that a LADDER can get them over Trump’s wall??!? https://t.co/rSp2VpzWTO

— Garrett M. Graff (@vermontgmg) December 4, 2019

As many of us have long argued, the Wall's "state of the art" 13th century technology is easily defeated by the 14th's century invention of a ladder. https://t.co/2oLjtKOhZf

— Ronald Klain (@RonaldKlain) December 4, 2019

So much winning. https://t.co/pRJbXH7F6g

— Katie Phang (@KatiePhang) December 4, 2019

Trump’s brand new “impenetrable” #BorderWall was scaled in seconds with nothing more than a rope ladder: https://t.co/ZssGMAKrCa

— Laiken Jordahl (@LaikenJordahl) December 4, 2019

The best part about this tweet is the flood of MAGA folk saying, "ACTUALLY, this is exactly how the fence is supposed to work." https://t.co/ATA7S6x8bp

— Max Burns (@themaxburns) December 4, 2019