White House press secretary Tony Snow has cancer again, and this time it's spread to his liver. Doctors discovered the recurrence when they removed a  growth from his lower abdomen yesterday. Snow, who's 51, underwent surgery and chemotherapy for colon cancer two years ago.
                                    
                                    
                                
                                
                             
                            
                            
                            
                            
                            
                                
                                
                                    
                                        It's unclear whether the former Fox television host, who's been a vigorous and popular defender of the embattled president, will be able to return to his post.