Three flights carrying 327 Haitian nationals landed in Haiti on Sunday, according to two U.S. officials who spoke on the condition of anonymity because they were not authorized to release the information. In a midday news conference, Border Patrol Chief Raul Ortiz said the federal government had moved 3,300 individuals from the camp Sunday to migrant processing facilities. The government enlisted the help of the local school system to transport people on school buses to facilities in Texas in San Antonio, Laredo and Eagle Pass, he said.

"We are working around-the-clock to expeditiously move migrants out of the heat, elements and from underneath this bridge to our processing facilities in order to quickly process and remove individuals from the United States consistent with our laws and our policies," said Ortiz, adding it will be done in a "humane and timely manner."

The Biden administration is conducting the deportations under Title 42, the Trump-era public health order that President Biden has kept in place to push migrants south of the border during the covid-19 pandemic.

The goal is to reduce the number of people waiting to be processed by U.S. Customs and Border Protection personnel and improve conditions on the ground. It's also designed to break the momentum and determination of migrants who have been encouraged by their U.S. relatives to make the journey before the opportunity passes or their individual circumstances worsen.