270million people, most of them that have no idea how to fire a gun, or they only know how to shoot a 9mm. Also dont forget the pacafist liberals who make up the majority, where not all that scared of the democrat majority in the States, they easiest violent conflit is agasint a democrat, they have never shot a gun, hell they want to outlaw them because there scared of guns. You 270million wouldnt fight, while 23 of our 24 would fight to the death.
Last time I checked, the United States has a volunteer army that would be more than happy to protect the Union.