The United States is “facing a whole lot of trouble” as coronavirus cases continue to surge across the country heading into the cold winter months, Dr. Anthony Fauci, the nation’s top infectious disease expert, told CNBC on Monday. The U.S. reported more than 44,600 new cases on Sunday and the seven-day average rose to over 49,200 new cases per day, up more than 14 percent compared with a week ago, according to an analysis of data compiled by Johns Hopkins University. Average daily cases were up by more than five percent in 36 states and the District of Columbia.