What is an American?

In my opinion, an American would somehow have to be associated with the United States in order to even consider calling themself one, whether it be by living there or being born there. I believe that anyone who can call themself by a certain title has to show some kind of loyalty to that title. I hear many, "Americans," put down their own country from time to time. To me, calling yourself by a name that you do not even like or have respect for is like insulting yourself, so when Americans insult the United States, I can't help but feel they are somewhat hopeless by not even giving something that they are a chance. I feel a true American would be someone who has pride in their country.