A child stops by a large print at a photographic memorial for those killed in the confrontation between Ukraine's military and the pro-Russia separatist forces in Sievierodonetsk, Luhansk region, eastern Ukraine, Wednesday, February 23, 2022. Ukraine urged its citizens to leave Russia, and Europe braced for further confrontation Wednesday after tensions escalated dramatically when Russia's leader received authorization to use military force outside his country and the West responded with a raft of sanctions. (Photo by Vadim Ghirda/AP Photo)

Natalia Williams dressed as Corpse Bride Emily and Tony Knight as a Mandalorian, arrive at the Bradford Unleashed Comic-Con, an entertainment and comic book convention in England on March 8, 2020. (Photo by Danny Lawson/PA Images via Getty Images)

A woman wears a Yao bridal headdress in Hezhou, Guangxi, China on January 6, 2021. (Photo by Sipa Asia/Rex Features/Shutterstock)

French model Tiffany Fournier poses for a digital presentation as part of the spring/summer 2021 collections for the Polish fashion house La Metamorphose, in Paris, France, September 26, 2020. (Photo by Charles Platiau/Reuters)

An Asian elephant cools off at the zoo during the World Elephant Day in Lodz, central Poland, 12 August 2022. The World Elephant Day is observed every year on August 12. (Photo by Grzegorz Michalowski/EPA/EFE/Rex Features/Shutterstock)

Boozed-out revellers donned fancy dress as they welcomed in the Bank Holiday at the Otley Run. Hundreds swarmed Leeds, UK on Saturday, March 30, 2024, as the infamous tipple mission got underway beneath blue skies and sunshine. (Photo by NB Press LTD)

Sudan cheetah cub Assama inspects a camera bag in its enclosure at the Landau Zoo, in Landau, Germany, 03 September 2025. Assama, born in July as the only cub to a cheetah cat, was rejected by its mother, and is now being bottle-fed by its caretakers. (Photo by Ronald Wittek/EPA)

The Mexico – United States barrier – also known in the United States as the border fence, rotted fence or border wall – is actually several separation barriers designed to prevent illegal movement across the Mexico – United States border.