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US Military Expands Enforcement Zone to 1/3 of Southern Border

  • In early July 2025, the Pentagon designated a fourth National Defense Area spanning approximately 140 miles along the border between Arizona and Mexico, near the Barry M. Goldwater Range.
  • This expansion follows President Trump's April 11, 2025 memorandum directing the military to seal the southern border, which authorized creation of NDAs where troops can detain trespassers.
  • The NDA in Arizona extends Marine Corps Air Station Yuma property, complements three existing NDAs in New Mexico and Texas, and allows military patrols, installation of barriers, and detention of trespassers transferred to civilian law enforcement.
  • About 8,500 troops are deployed to the border with more than 3,500 patrols conducted since March 20, 2025, while an ongoing Air Force drag road monitoring project tracks environmental damage from illegal crossings.
  • Experts warn the military's expanded role may face court challenges due to Posse Comitatus Act limits, but officials emphasize progress toward full operational border control under military authority.
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Ej rcito de U.S. has placed thousands of warnings at the border declaring a 'restricted rea', prompting the Ej rcito to monitor the area.

·Mexico City, Mexico
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San Diego Union TribuneSan Diego Union Tribune
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Independent EspañolIndependent Español
Center

Orange markings and written in English and Spanish about prohibition of entry, placed by the U.S. military, dot the New Mexico desert, where a border wall crosses onion fields and dry ranches with high grass wicks that grow between thin bushes and cassava trees. The U.S. Army has placed thousands of these warnings in New Mexico and West Texas, declaring a “restricted area by the commander’s authority.” It is part of a major change that has promp…

·San Diego, United States
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diario.mxdiario.mx
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eldiariodechihuahua.mxeldiariodechihuahua.mx
Center

Orange markings and written in English and Spanish about prohibition of entry, placed by the U.S. military, dot the New Mexico desert, where a border wall crosses onion fields and dry ranches with high grass wicks that grow between thin bushes and cassava trees. The U.S. Army has placed thousands of these warnings in New Mexico and West Texas, declaring a "restricted area by the commander's authority." It is part of a major change that has promp…

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UPI broke the news in Washington, United States on Wednesday, July 2, 2025.
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