Are the Lockdown Orders Constitutional?

In response to the COVID-19 outbreak, governors and mayors have issued shelter-in-place orders, closed businesses they have deemed nonessential, and banned gatherings, including church and political assemblies. Are these orders constitutional?

One vocal sector of opinion has answered with a loud “No way!” “Reopen” demonstrators, assembling and recently descending on state capitals, take it as a given that the framers of the U.S. Constitution would approve of their cause. According to the activist group FreedomWorks, “many” rights “are being unconstitutionally suspended by [governors and mayors] acting unilaterally across the country.”