If you can get an appeal. If the evidence against you wasn't fabricated or "overstated".
I can confidently say that there are crimes so horrible that the death penalty is appropriate for. The problem is you can't undo the punishment if the criminal justice system is found to have made a mistake. How do you objectively measure the level of perceived doubt of guilt between McVeigh and the innocent individuals who have likely been executed? Until we can prosecute with 100% certainty, I can't support executing a convicted criminal.