More than you may realize. And that oath may, in the months and years ahead, be put to a test that you neither expect or want. This paper is to help you prepare for that test.
Foreign enemies are easy to understand, and require little discussion.
Nothing like that will ever happen in the United States of America. The people running our government are nice guys who can be trusted to try to do the right thing. They would never try to do anything like that. This is just some kind of paranoid anti-government propaganda. Don't be too sure.