The program has allowed thousands of undocumented young people who were brought into the United States as children, or overstayed visas, to live, work and stay in the country. “They applied with DACA but now they are scared,” said Castillo of her children. “Now we don’t know what happens after this.” U.S. District Judge Andrew Hanen of Houston recently declared DACA illegal. The status of those already in the program will not change, and they can still seek renewals. But Hanen said the Department of Homeland Security cannot grant new applications for those who have never been in the program.