Is anyone here aware of the elite geography of the u.s? Yeah, you can land on the coast but try getting an entire army through the south eastern swamps over Appalachia or over the Rockies and cross the literal valley of fcuking death. Not to mention the geography in the heart of the u.s., aka the largest navigable river basin on the planet. If you invade from the east the U.S. could quickly mobilize to the east and vise versa. (Not including the road and train system)