The Deferred Action for Childhood Arrivals is a program created under the Obama administration. When Trump took office, there was a challenge about the program’s legality which ended up with it being in front of the U.S. Supreme Court for a ruling.
According to the National Immigration Law Center, the U.S. Supreme Court was considering if the Trump administration’s termination of DACA was legal. The court was not making a decision about the legality of the law. It was only determining if the way the Trump administration handled the program was legal, and on June 18, 2020, the court decided it was not.