Mohamedou Ould Slahi's brother, a German citizen, wanted to go to the US to advocate for Mohamedou's release from Guantanamo prison. The US denied him entry, after questioning him for hours about his family.

The US could easily have blocked him from boarding the flight, but that would have been insufficiently nasty.

Since imprisonment without trial is tyranny, the US must release all the prisoners in Guantanamo, or else charge them with crimes and give them fair trials.