John Walker Lindh (aka the American Taliban) is serving a 20 years sentence in a Federal prison. John, who now goes by the name Hamzah, is forbidden to speak Arabic, in accordance with a gag rules imposed on him. So when a fellow Muslim inmate greets him in Arabic "al-Salam Alikum" and he answers "Wa Alikum al-Salam" he ends up in solitary confinement. His story was discussed on NPR this afternoon with Tom Juno, the author of a lengthy article about him in the July issue of Esquire.