When will be able to leave our homes? When will the grim news about coronavirus cases and deaths begin to wane? When will the pandemic subside in the United States and life return to something with at least a passing resemblance to normal? US government officials and experts are increasingly now saying such a reopening may not be possible for weeks or months. And any opening may entail some reduction in social distancing efforts that is followed by future rounds of restrictions. At the least, a reopening of public American life will almost certainly require widespread testing, so health authorities can tamp down on any future outbreaks as they emerge.