Trump: Going to ask Saudi Arabia, OPEC to bring down cost of oil
                                            
                            Oil prices turned negative as Trump spoke, while the euro dipped and the US dollar swung between gains and losses against a basket of foreign currencies.                        
                                        
                    
                                
                    
                                
                            Oil prices turned negative as Trump spoke, while the euro dipped and the US dollar swung between gains and losses against a basket of foreign currencies.