Convicted terrorist and 9/11 co-conspirator remains in maximum security prison . Score: 6 In appeal , he said he should have been allowed to give evidence from al Qaeda leaders .
Convicted terrorist and 9/11 co-conspirator remains in maximum security prison . He was first person charged in the U.S. in connection with 9/11 attacks . In appeal , he said he should have been allowed to give evidence from al Qaeda leaders .