Originally Posted by donnie

do you remmember Red Dawn?

The only way to invade the US would be to invade through a neighboring country first, say Mexico, and/or Canada. The army could theoreticaly feed off the land making supply lines irrelevant, pull up to the ol' Sunoco and filler up. But this would have to be a massive undertaking, one that would take years of planning and hundreds of thousands of men, (all the while the US clueless to the massive build up around them) and for what? Plus the US is inhabitated like no other country I can think of, the population is so spread out, you would always be outflanked, with a standing army in every state, I cant see any scenerio where this works.