The U.S. Supreme Court blocked President Trump from ending the Deferred Action for Childhood Arrivals program, or DACA, which shields from deportation hundreds of thousands of immigrant children who were brought to the United States illegally.

The court’s decision, 5-4, allows the Obama-era program to stay in place following the Trump administration’s attempt to disassemble it in September 2017. The decision does not say Trump lacks the power to disband DACA but rejects the way it was done. The Trump administration could attempt again to rescind the program.