In the region surrounding Tucson, CBP processing centers are often at double their capacity. And approximately 27,000 migrants were in CBP custody as of Wednesday night, another record, with more arriving and more being released into the United States by the hour. Customs and Border Protection encountered more than 12,000 undocumented migrants crossing the border for the third straight day, a new record.
The officials said the migrants are dropped off in coordination with the city officials and local nonprofits who help them get transportation to their final destinations.