The US Department of State advises American citizens to avoid South Sudan due to an ongoing armed conflict. It has in the past accused South Sudan of “extrajudicial killings, forced disappearances, torture and cases of cruel, inhuman and degrading treatment or punishment”.

The court’s order followed a broader one last month allowing removals to countries with which migrants have no connections.

The Supreme Court allowed the Trump administration to restart swift removals of migrants to countries other than their homelands on Monday.