President Donald Trump pauses as he speaks about the Operation Warp Speed program.
（Trump allies ask court to halt Biden's win in NevadaTrump fires top U.return to the Paris climate accord.
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國using hearings and investigations to put public pressure on them to change practices.
個Biden will begin receiving the classified presidential daily briefing.
The images of him unmasked and flouting social distancing protocols with a group of friends drew criticism on social media.