This is the topic I've chosen for my bachelor thesis. - I wanted more information about the way the United States treat sovereignty and what happens when an American citizen commits a crime outside the United States. Also, what are US rules about extradition. - Another thing I don't understand is the difference between the Federal Courts and the States courts . I've a search about these topics, but given that I don't have much time to make further searches, I thought any of you could give me specific information about what I'm asking. Thank You.