The wall along the southern border will be painted black in an effort to make the structure too hot to climb, Department of Homeland Security Secretary Kristi Noem announced Tuesday, saying the suggestion came from President Donald Trump.

U.S. Homeland Security Secretary Kristi Noem said the nation's southern border walls will be painted black to better repel anyone who might try to scale them.

WASHINGTON — Homeland Security Secretary Kristi Noem said Tuesday that the entire border wall along the southern border with Mexico is going to be painted black to make it hotter and deter illegal immigration — and she credited President Trump with the idea.