The 9/11 Commission said that this tracking system would be a high priority and would have assisted law enforcement and intelligence officials in august and September in 2001 in conducting a search for two of the 9/11 hijackers that were in the United States expired visas.
                                                                                    
                                        
                                        
                                        
                                        
                                                                                
                                            
                                                
                                                    
                                                        Donald Trump's Immigration Speech in Phoenix, www.latimes.com. August 31, 2016.