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Unlike political campaign rhetoric, Mullin’s comments were made under oath before members of Congress, placing the administration’s commitments squarely on the public record.
The update serves as a stark reminder of how dramatically America’s border policies changed between administrations.
When President Donald Trump left office in January 2021, hundreds of miles of border barriers had already been completed. Additional projects had secured funding and were ready to move forward.
That momentum came to an abrupt halt when President Joe Biden entered the White House and quickly moved to suspend construction efforts through executive action.
Supporters of border security have long argued that the decision was driven by political pressure rather than practical concerns about effectiveness.
During his testimony, Mullin highlighted a challenge rarely discussed by many national media outlets.
The problem is not simply building a wall. It is staying ahead of criminal organizations that constantly adapt their methods.
“The primary wall is the first wall up because of the way the cartels adjust,” Mullin said. “They’re thugs and they’re terrorists.”
According to Mullin, drug trafficking organizations and human smuggling networks have repeatedly found ways to damage portions of existing barriers. In some locations, cartels have cut through structures to create temporary access points before law enforcement can respond.
That is precisely why the administration is investing in additional layers of security.
The secondary barrier is intended to create another obstacle while agents are dispatched to the scene. At the same time, advanced surveillance technology is being integrated throughout the border region.
“The smart wall is pretty impressive,” Mullin said. “We can put a drone in the sky and immediately keep eyes on them.”
The broader strategy combines physical barriers with modern technology, including drones, cameras, motion sensors, and enhanced monitoring systems. Together, these tools are designed to limit crossing points and make it significantly harder for criminal organizations to move people or narcotics into the United States undetected.
As Mullin explained, “The smaller the choke point gets for criminals to cross.”
Federal officials reported that Customs and Border Protection has already committed billions of dollars toward these technology upgrades. Additional contracts are expected to be finalized by June 30, while hundreds of miles of new barriers are projected to be completed in the coming months.
Mullin also pointed to statistics that underscore how dramatically border conditions have changed.
At the height of the crisis during the Biden years, Border Patrol agents were reportedly encountering hundreds of illegal migrants every hour. The system was overwhelmed as record-breaking numbers flooded across the southern border.
Today, the numbers tell a much different story.
Federal data shows apprehensions have fallen sharply, reaching levels not seen in decades. Officials also report months of zero parole releases, a dramatic departure from policies that critics said encouraged illegal immigration.
Supporters of stronger enforcement argue these results demonstrate that physical barriers remain an important part of a broader border security strategy.
Interestingly, border infrastructure was not exclusively supported by Republicans. Presidents from both political parties authorized various forms of barrier construction over the past three decades. Even administrations that publicly criticized walls often continued projects already underway.
That is why many conservatives view Biden’s decision to stop construction as an unprecedented departure from longstanding border security practices.
Now, with construction moving forward once again, Mullin says the project is entering its final stages.
If current timelines hold, the primary barrier system will be completed by mid-2027, while the larger network of secondary barriers and surveillance technology is expected to be fully operational by 2028.
For years, Americans were told that border walls were ineffective and unnecessary.
The latest numbers, combined with the administration’s renewed focus on enforcement, are fueling a very different debate.
And according to Mullin’s testimony, Washington may soon have the completed border infrastructure that previous administrations spent decades discussing but never fully delivered.
