This past March, 42 years into his life prison sentence for assassinating Sen. Robert F. Kennedy, Sirhan Sirhan stood in front of a parole board and repeated the same thing he had been saying at parole hearings for decades: that he had no memory of the shooting or his subsequent trial and confession of guilt. For the 14th time, his application was denied. Two weeks ago, Sirhan's attorneys filed the latest in a series of appeals that aim to get Sirhan back in front of a judge to correct what they call "an egregious miscarriage of justice." Sirhan, they argued,...