WASHINGTON US President Joe Biden visited New Orleans on Monday to mourn with the families of the victims of a deadly New Year's Day attack. "My wife and I are here to stand with you, grieve with you, pray with you, let you know you’re not alone," Biden said at an interfaith prayer service at St. Louis Cathedral. He said he had directed his team to make every federal resource available to complete the investigation quickly. "I promise you the day will come…when the memory of your loved one will