... bdhunts makes the best case for killing him in his above post. He pledged to defend this country against both foreign and domestic enemies.
I posted the actual oath he took above. You might want to read it again to see what he really pledged to do.
And that is exactly what was done... It was defended........ Against a Domestic ENEMY that went FOREIGN. He chose his place and he was taken out. You don't think that he was trying to destroy the Constitution? Destroying any and all things about the USA is the whole scheme of Al Qaeda and others? So yes killing him did defend the Constitution and My Country...
