Elliot Spagat, Associated Press

Biden’s new rules have also fueled anger among some Democrats concerned that he is furthering a Trump-era policy they view as hurting vulnerable migrants trying to escape dangerous conditions in their countries.

The sharp increases from June were striking because border crossings usually decrease during stifling — and sometimes fatal — summer heat.

Parents will return to the United States on humanitarian parole while authorities consider other longer-term forms of legal status, an official said. The children are already in the U.S.