After 21 years, justice has yet to be attained in the case against the plotters of the 9/11 terrorist attacks, and a year of plea negotiations and canceled hearings at Guantanamo Bay has pushed any potential trial back even further.

Negotiations between prosecutors and defense attorneys at Guantanamo Bay could reportedly result in guilty plea deals in which the death penalty is taken off the table for 9/11 mastermind Khalid Sheikh Mohammed and his four co-defendants. Top Republicans have criticized any such possibility.