Jesus fucking christ there are a lot of billy bad-asses in here that claim when in a situation where you are about to assassinate a person, let alone a former President, that you will have nerves of steel and be able to control your adrenaline and be able to make the shot just like it was any other shot...easy peasy. Plus, at least in this situation, it is very likely that you will get taken out as soon as you start shooting. I'm calling bullshit on all of it.
Yeah, it is easy for most anyone with any rifle training at all to hit a stationary, inanimate, head-sized target at 150 yards. But when that target is flesh and blood (another human), I'd venture to guess none of you could control your nerves and adrenaline to hit the mark 100% of the time. Plus the target is shifting, not necessarily "moving", so the bullseye will not actually be the size of a head.
But carry on and keep telling us how bad-ass you'd be in this situation. One shot, one kill, right?!?!?!?