Red Skies (2002)

A Chinese cop tracks down a Chinese gang lord who specializes in kidnapping of Chinese immigrants to serve in his American sweatshops and who killed her partners. Following him to San Diego, she teams with an American agent and his team. The differences of operation immediately becomes clear as the American team relies on paperwork and she wants to attack head on to bring him down, but the two eventually reach an understanding of each other and work to bring the gangster down.