FILE - In this May 25, 2021 file photo, Secretary of Homeland Security Alejandro Mayorkas speaks during a news conference at Ronald Reagan Washington National Airport, in Arlington, Va. In consecutive visits this in June 2021, Vice President Kamala Harris and Mayorkas have conveyed to the most important U.S. partner that the Biden administration is taking a more nuanced approach to immigration than its predecessor, but still asking what more Mexico can do.(AP Photo/Patrick Semansky, File)

FILE - In this May 17, 2021 file photo, a group of migrants mainly from Honduras and Nicaragua wait along a road after turning themselves in upon crossing the U.S.-Mexico border, in La Joya, Texas. The Biden administration announced Tuesday, June 15, 2021, that it was expanding a newly-revived effort to bring Central American children to the United States to reunite with parents legally living in the country. (AP Photo/Gregory Bull, File)