This is a marginal impact at best. The vast majority of illegal immigrants will try to flee the scene of a crash because they would be worried that the police might be called in to investigate the crash and find out they are illegal and therefore deport them. Although this isn’t always a realistic expectation, it is an expectation that most people in the illegal immigrant community have because of their paranoia over the state pursuing them and wanting to deport them. This fear is only exacerbated by the anti-illegal immigrant rhetoric that permeates American society at present and makes them feel that the state will try to seek them out however they can to get rid of them.