The Usurper

Book description:
Gary Jackson is raised to hate. Hate the United States, its people, and everything they  have ever stood for. His mission is to destroy the United States from within, allying himself with America's enemies to accomplish the deed, and he stops at nothing to get what he wants. A small group of Americans decide they need to stop him. Will they succeed or will the US be relegated to the dustbin of history?

http://www.amazon.com/The-Usurper-ebook/dp/B003VP9VVK