Trump Launches $47 Billion Smart Wall Border Project
President Donald Trump is implementing a large-scale smart wall project across the U.S.-Mexico border, sparking legal battles with the Tohono O’odham Nation over tribal sovereignty.
President Donald Trump is implementing a large-scale smart wall project across the United States-Mexico border funded by the One Big Beautiful Bill Act. The legislation allocates $47 billion for barriers, access roads, and technology, with an additional $20 billion for personnel and equipment. The initiative involves constructing over 600 miles of new barriers, including 30-foot steel bollard walls and underwater netting in the Rio Grande, with a target completion date of 2028. As of August 19, 2026, only 11% of the planned new wall had been completed.
Construction has recently expanded into southern Arizona, where U.S. Customs and Border Protection officers and contractors entered tribal lands to conduct soil sampling. This move has led the Tohono O’odham Nation to accuse the government of trespassing and desecrating sacred sites. While U.S. District Judge Richard Leon ruled that construction is permitted on the federally owned Roosevelt Reservation, the tribe argues that using tribal land to access that zone is illegal.
U.S. Customs and Border Protection Commissioner Rodney Scott defended the project as a necessity to close dangerous smuggling corridors. However, the project faces ongoing legal challenges from the Tohono O’odham Nation and the Center for Biological Diversity. Despite the infrastructure, officials note that smugglers continue to bypass barriers using tunnels and cutting torches, suggesting that the project's ultimate effectiveness may depend more on asylum policy than physical walls.