Construction of the U.S. southern border wall is advancing at an unprecedented pace, with crews completing roughly half a mile each day. Federal officials say $46 million has been allocated to the project, which they credit for a dramatic 92% drop in illegal crossings since January.

The latest phase of construction includes painting sections of the wall black—a decision officials describe not only as symbolic, but also strategic. By absorbing more heat, the darker surface makes scaling the wall more difficult, serving as an added deterrent to unlawful crossings.

Supporters argue the progress reflects decisive leadership and a clear commitment to national security. “Record-low crossings prove enforcement works. Keep building, keep securing, no apologies,” said one official involved with the project.

Critics, however, point to the administration’s use of environmental waivers to expedite construction, warning that ecological concerns are being sidelined. Conservation groups argue that fragile ecosystems and wildlife corridors are at risk, but proponents counter that border security must remain the top priority.

The wall has long been a flashpoint in American politics, but with crossings at historic lows, the administration is doubling down on its push to expand enforcement measures without delay.