He's the poster child for capital punishment. There's one small problem. You can't be halfway against the death penalty anymore than you can be halfway for the First Amendment. Timothy McVeigh should not be executed, plain and simple. He should be put away forever, with no hope of ever rejoining society.
Capital punishment is nothing more than state sponsored homicide.
It's the state acting as Timothy McVeigh acted. If he is wrong to kill, so is government wrong to kill him. There's something else to consider here. Consider also that McVeigh will have literally sailed through the legal system, going from arrest to gurney in just six years. Don't think for a minute that pro death penalty lawmakers haven't noticed, and thought about speeding up the process in their jurisdiction.