Homeland Security Secretary Kristi Noem says the entire southern border wall with Mexico is being painted black to deter illegal immigration.

Homeland Security Secretary Kristi Noem has announced the U.S.-Mexico border wall will be painted black at President Donald Trump’s request to make the metal hotter and deter migrants. Trump boasted about the historically low border crossings in July on Truth Social account late Tuesday afternoon.

Speaking in front of a portion of the southern border wall in Santa Teresa, New Mexico, Noem explained that the wall would be painted entirely black for the dual purposes of making it heat up more and thus harder to climb, as well as increasing the lifespan of the metal.