In 2012, Barack Obama's Homeland Security Secretary Janet Napolitano rolled out the "Deferred Action for Childhood Arrivals" program, also known as DACA.  Over 800,000 illegal immigrant children (or more) have been blocked from deportation and allowed to remain in the US through the DACA program through 2021.

Donald Trump moved to terminate DACA but the Supreme Court backed immigration advocates in 2020.     

In July 2021, a federal judge ruled that first-time DACA applicants were barred from applying to the program.  All individuals whose DACA requests were approved prior to July 16, 2021 will continue to have DACA status and all DACA requests that were approved before July 16 will continue to be eligible to renew DACA and DACA work permits.