Part of US-Mexico border wall painted in black at Trump's request | AFP

Images of the US-Mexico border wall days after Homeland Security Secretary Kristi Noem said the US-Mexico border wall will be painted black to absorb more heat and make it tougher to climb, crediting former President Donald Trump with the idea. The administration points to a steep drop in crossings in recent months, arguing that mass arrests and detentions are discouraging illegal migration.