The Supreme Court has dealt a major blow to President Trump’s efforts to rescind DACA, the Obama-era Deferred Action for Childhood Arrivals program, which gives at least 700,000 young immigrants permission to live and work in the United States. On Monday, the court refused to hear a White House appeal of lower court rulings saying Trump’s move to cancel the program was unconstitutional. Monday’s decision by the Supreme Court means the legal challenges to DACA’s cancellation will continue to work their way up through the courts. In the meantime, DACA recipients will be shielded from deportation and allowed to continue to renew their protected status. But Monday’s move by the Supreme Court does not resolve the future of the program. A group of undocumented activists are currently on a 250-mile walk from New York City to Washington, D.C., to demand Congress pass a permanent solution to DACA and protect young undocumented immigrants.