While battle rifles are fun, this is not their primary purpose. The purpose of my battle rifle is disable those who would use violence to destroy my life, liberty or my property.
Using one to stop an assault or a crime becomes a crime itself about the time the first unnecessary round is fired. You can shoot someone in most cases once but more than that is not allowed. Not even if the shot guy needed shooting.
Many criminal home invasions involve multiple aggressors. Unless you live in a condo or have other overpenetration concerns, a battle rifle is the best tool for the job. It was also the best tool for the Korean shopowners in LA or anyone else in an area where urban unrest is likely.
You are correct in believing Bush to be the only electable candidate but if he extends or continues this ban he will making criminals out of thousands of otherwise law abiding citizens. Not 1 in 10 battle rifle owners understands the current law.
Off topic...I've been brushing up on my revolutionary history....You are right!! Jefferson was a duplicitious prick.