The news that three US senators have been diagnosed with coronavirus threatens to upend what was expected to be a relatively smooth confirmation of President Donald Trump's third Supreme Court justice.
If you didn't know this before, the last 72 hours should serve as a reminder that when it comes to the mechanics, the confirmation and the future of what happens in Congress this month, nothing is certain.
That includes the confirmation of Amy Coney Barrett before Election Day. What unfolds over the days and weeks can't be controlled by a master political tactician like Senate Majority Leader Mitch McConnell or last-minute procedural hurdles unfurled by Minority Leader Chuck Schumer, a New York Democrat.
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