又出“奇招”？美政府欲将美墨边境墙漆成黑色，借炙热高温阻止移民攀爬

Core Points - The U.S. Secretary of Homeland Security, Kirstjen Nielsen, announced that President Trump wants the U.S.-Mexico border wall to be painted black to increase its heat absorption, making it more difficult for illegal immigrants to climb over [1][3] - The wall's design is already high and deep, making it challenging to scale or dig under, and the addition of black paint is expected to further deter illegal crossings [3] - The U.S. is experiencing ongoing issues with illegal immigration, which has led to increased social tensions and political polarization, with both major political parties leveraging immigration policies to appeal to different voter demographics [3] Summary by Sections - Border Wall Design and Modifications - The border wall is designed to be very high and difficult to climb, with plans to paint it black to enhance heat absorption [3] - Additional technological upgrades, including cameras and sensors, are planned to improve the wall's effectiveness [3] - Political and Social Context - The issue of illegal immigration has intensified in the U.S., contributing to social divisions and racial discrimination [3] - Both Democratic and Republican parties are using immigration policy as a political tool, complicating the execution of effective solutions [3] - Public Sentiment and Challenges - The narrative of illegal immigrants impacting American society is being amplified, with new immigrants often portrayed as scapegoats for broader social issues [3]