I repeat again, no matter where you record the movie, or the person acting in the movie, what matters is that the company produces and distributes, an example is the movie 2012, was recorded mostly in Canada, most of its cast is Canadian / American, and the movie is American. 

 An example is also titanic, 80% of the actors are British, was recorded in Canada, Mexico, United States, and American remains, just because is distributed for a U.S. company, and also produced. 
 James Cameron directed, and is Canadian, for that, the movie no is canadian. 

 is just like Prometheus.