As if he ever stood any chances to play for Brazil.
The point here is to choose a country when 2 countries want you to play for them. Lots of players who could have played for Switzerland, Australia, Austria, even Germany, chose Croatia over them.
In USA's case though....
Edit: Actually, that Scottish dude whose leg was broken on Wednesday was the only one who chose USA over another country. But he's just one in a dozen or more.