The US Supreme Court has ruled against President Donald Trump's bid to end a programme that protects hundreds of thousands of young immigrants from deportation.
The justices upheld lower court rulings that found his move to rescind the Deferred Action for Childhood Arrivals (Daca) programme was "unlawful".
It protects "Dreamers", who entered the US without documents as children.
The Trump administration has sought to end the Obama-era policy since 2017.
The Supreme Court took up the case after lower courts ruled that the Trump administration did not adequately explain why it was ending the programme, criticising the White House's "capricious" explanations.
On Thursday, the justices voted 5-4 to uphold the lower courts' findings that the administration's order violated the Administrative Procedure Act, which says a government action cannot be "arbitrary, capricious, an abuse of discretion or otherwise not in accordance with law" or "unsupported by substantial evidence".