Apple chief Tim Cook hasn't been shy on where he and his company stand on immigration, but he's making it more official today. The tech firm, which named Cook and retail exc Deirdre O'Brien, has filed an amicus curiae (friend of the court) brief with the US Supreme Court defending the Deferred Action for Childhood Arrivals program against the Trump administration's effort to tear it down. Cook and Apple contended that it was legally and morally wrong to threaten deportation for people who had followed US policy and sought a legal path to staying in the country. "Who are was a country if we renege?" Apple asked.