Explainer: What is at stake as the Supreme Court weighs the future of immigrant 'Dreamers'

FILE PHOTO: Members of the Border Network for Human Rights and Borders Dreamers and Youth Alliance (BDYA) hold a banner during protest outside a U.S. Federal Courthouse to demand that Congress pass a Clean Dream Act in El Paso, Texas, U.S. March 5, 2018. REUTERS/Jose Luis Gonzalez

WASHINGTON (Reuters) - The U.S. Supreme Court will soon decide the legality of President Donald Trump’s decision to end a program offering work permits and deportation relief to immigrant "Dreamers" who came to the United States illegally as children.

Trump, a Republican, moved in 2017 to phase out the Deferred Action for Childhood Arrivals (DACA) program. His administration argued the initiative of his Democratic predecessor Barack Obama was unconstitutional and would not withstand legal challenges.