Coronavirus live updates: Senators return to Washington, Supreme Court justices are streamed live

With new measures in place to prevent the spread of coronavirus, Senators returned to Washington on Monday. Soda machines were taped off, tables were spread out and basketball-size circles painted on the ground reminded visitors how far apart six feet is. Lawmakers were scheduled to take their first vote Monday night.

At the U.S. Supreme Court, justices conducted their first-ever oral argument by conference call. The audio was streamed live — also a first — on news sites and is available on CSPAN.

A report by the Department of Homeland Security's intelligence service details China's efforts to cover up the depth of its coronavirus outbreak while stockpiling medical supplies. The details come one day after one day after Secretary of State Mike Pompeo said China must be held accountable for spreading the deadly virus.

More than 68,000 people have been sickened with the disease across the United States, according to an NBC News tally. New York state tops the list, with more than 25,117 deaths. More than 1 million Americans have contracted the virus.

Here's what to know about the coronavirus, plus a timeline of the most critical moments:

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