The big question: Is this a temporary disruption, or will it effectively ground the president, Vice President Mike Pence, and the Democratic ticket of Joe Biden and Kamala Harris?

And will the Senate confirmation hearings for Amy Coney Barrett to the Supreme Court — which were supposed to begin Oct. 12 — be delayed because of lawmakers’ proximity to Trump and other White House officials who may have been exposed?

Driving the news: Trump’s planned roundtable today with supporters in D.C. and flight to Florida for a campaign rally already have been called off.