ICE says 780 undocumented immigrants flown out of military base in Del Rio FacebookTwitterEmail FILE PHOTO — DEL RIO, TEXAS - MAY 17: Immigrants prepare to be taken to a border patrol processing facility after crossing the Rio Grande river into the United States on May 17, 2021 in Del Rio, Texas. A surge of mostly Central American immigrants crossing into the United States has challenged U.S. immigration agencies along the U.S. Southern border. (Photo by Brandon Bell/Getty Images)Brandon Bell /Getty Images The Biden Administration acknowledged Friday that it is using a military base in Texas to fly hundreds of undocumented immigrants for processing to other areas to relieve overwhelmed border facilities.