The president and all 50 governors have declared health emergencies to combat the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19). While researchers race for vaccines, officials are implementing physical distancing, including orders to stay at home, restrict travel, and close non-essential businesses. To limit cross-border spread, a few states have issued mandatory quarantines for interstate travelers. Models suggest physical distancing would have to persist for 3 months to mitigate peak impacts on health systems and could continue on an intermittent basis for 12-18 months. What legal powers do governments have? What is the role of the courts? How can we balance public health with personal and economic rights
