Who is this song aimed at? If you wish to get technical an "american" is one who lives in the americas. You should specify the U.S.A. or U.S.

Central Americans are Americans, South Americans are American. There was a huge controversy on an embassy in mexico called "american embassy" ( the american embassy was the USA embassy to Mexico)
The Title of the embassy offended mexico and it was changed to "the united states embassy to mexico" because technically an american is anyone in the americas...

Be more specific in your songs 

Btw, I totally agree Bush is a FREAKING idiot, the worst president EVER to be in office. Causes wars and swears on tv. What a great president the united states has.