A major focus for the Biden administration, he said, is rebuilding "orderly systems" in Mexico and Central America to discourage would-be migrants from traveling to the US border. He also dissuaded migrants from crossing the border.
Texas Governor Greg Abbott said earlier this week that the administration of US President Joe Biden has failed to provide safe and humane conditions at two recently-opened facilities in Texas that are holding migrant children.
Desai said she credited the Biden administration for its commitment "to humanely addressing the humanitarian situation" at the border.
Arriving back at the White House on Sunday night, Mr Biden was asked whether he would travel down to the border.
"They've created the crisis".
The Republican lawmakers have accused Biden's immigration policies, including a plan to give citizenship to some 11 million people now in the United States, for inviting tens of thousands of illegal aliens to the US border.
Border security experts warned about the consequences of removing these policies.
Almost 10,500 others are being sheltered in emergency shelters by the Department of Health and Human Services, CBS said. They heard that smuggling organizations would exploit the perception (not to mention the reality) that our borders would be wide open.
"The entire system. was dismantled in its entirety by the prior administration" and had to be rebuilt, Mr Mayorkas said. Instead, in the span of a just few weeks, the Biden Administration has turned a national triumph into a national disaster.
CNN previously reported that children are alternating schedules to make space for one another in confined facilities, some kids haven't seen sunlight in days and others are taking turns showering, often going days without one, according to case managers, attorneys and Border Patrol agents. As the CBP's former acting commissioner, I know that a significant percentage of unaccompanied minors are Mexican nationals who are promptly expelled. Predictably, human smugglers seized on this opportunity, pushing unprecedented numbers across our borders. Okay, Cuellar pressed, what about the messages from friends, neighbors and family saying now is the time to come - were they hearing those? From there, they were escorted by US officials to the global bridge to Ciudad Juarez, Mexico, around 800-miles (1,300 km) away from where they were first picked up by USA border patrol agents. Where is the humanity in encouraging and incentivizing these dangers? Chavez said the priority was to expel them to Mexico, but that Mexico could only receive a limited amount of families from the region per day. Another fact Mayorkas did not mention is that CBP's open-air facilities are overcrowded with more than 8,000 migrants, increasing the risks of exposure to COVID-19 for the workforce and for migrants themselves - the opposite of the intended goal of the Trump administration's Title 42 order, which allowed the majority of illegal immigrants to be returned immediately back across the border because of COVID-19.
Secretary Mayorkas goes on strategically to omit that untold thousands of migrants have been released into local communities, with many testing positive for COVID-19. How is this "safeguard [ing] the American public and the migrants themselves" while we're still navigating a global pandemic?
By law, unaccompanied children are supposed to be removed from the custody of CBP within 72 hours and transferred to a facility operated by the Department of Health and Human Services.
Mr Mayorkas repeatedly placed blame on Mr Biden's predecessor, Donald Trump, who imposed an array of anti-immigration policies.