Posted 20 February 2013 - 08:44 AM
Like others have said... Anything is possible.
But invading America with armed forces would be an incredibly difficult task. We have good relations with the governments of the countries above and below us and our sides are protected by the two largest oceans, and the world's largest Navy.
All of our airspace would be pretty much impenetrable during a time of war, with our aircraft carriers, interceptor aircraft, and complex air defense nets.
So, if a military powerful enough to get through all this were in theory to try to invade America, the big factor is where. Yeah our capital is on the East coast and if the enemy could place enough troops on the east coast to take our capital, it could cause great chaos all over the country... However, now they only have the East coast as the rest of the country turns their focus on reclaiming what was lost. So from a tactical standpoint, you're fighting the entire country with your back against a wall. With the threat of enemy reinforcements attacking from behind, a.ka. America's allies britain, france, germany, etc. So that makes an East coast invasion a poor idea.
The West coast would be similar, but all they can really do over there is disrupt imports. We don't have any super crucial governement on that side of the nation. There's also American forces stationed in Alaska and Hawaii, so they would have to be taken out first before invading the West coast, or you'll just get encircled and wiped out. So a West coast invasion is also a poor idea.
I guess if the Mexican government falls apart and cartels establish their own government and military and said military would powerful enough, you could drive all the way into the mid U.S. ... But the Cartels gaining control of Mexico can't happen. There'd be too much of a bloody power struggle to see which cartel leader will lead the country. And after that, they're militaries still couldn't hold a candle to ours.
... If I were to strike the U.S. ANYWHERE as a enemy commander with a powerful enough Navy to do it... It'd be from the Gulf of Mexico. Why? The majority of America's oil refineries are in the Gulf. You can take out a massive amount of oil production for the entire country just by taking and holding those refinieries. However... Invading the gun-toting redneck south isn't a good idea. Pretty much everybody in the South owns a gun, and there would be an overwhelming number of Militia.
Is invading America possible? .... Yeah it's possible.
Is the enemy going to win? .... Hell no.