As long as Canadians aren't considered commies, I'm sure Jack and I will get along just fine. :P
For actual critique, holy smokes!
The robo-abs, metal wrists and contrast between Jack and the wasteland background are some of your best work yet!
And of course, having the US Flag being the only section with full colour makes it pop instantly when first looking at it. Almost as if giving the effect of the impression that the flag would give all of the wastelanders in Jack's world.
Only thing worth pointing out is that a few of the wasteland hills/mountains have just a few small parts that have tiny bits where the crosshatching seemed like there were some shortcuts taken.
Definitely a very fleshed out piece. Great work dude! 4.25/5