US mayors warn their cities are being overwhelmed

US mayors warned on Sunday that their cities were in danger of being overwhelmed by a surge in covid-19 cases as they pushed back against governors’ decisions to re-open states and President Donald Trump’s claims that the disease is under control. Across the US, the nationwide rolling seven-day average of new cases hit 48,361 - an increase of 11,740 on the past week. In all 18 states have reported new records, prompting local officials to warn that they are in danger of being overwhe