Holed up in the U.S.: Coronavirus shutdown threatens jobs

A pedestrian wearing a protective face mask walks past a nearly empty restaurant near Grand Central Terminal, Monday, March 16, 2020, in New York. New York leaders took a series of unprecedented steps Sunday to slow the spread of the coronavirus, including canceling schools and extinguishing most nightlife in New York City. (AP Photo/John Minchillo)

Millions of Americans holed up at home against the coronavirus Monday, with many of them thrown out of work until further notice, as authorities tightened the epic clampdown and the list of businesses forced to close across the U.S. extended to restaurants, bars, gyms and casinos.