overseas tonight, the new variant ripping through the uk. this weekend, london seeing the largest number of new cases since the pandemic began. wembley stadium now a mass vaccination center. the netherlands now in a new nationwide lockdown. france cancelling its famed new year's fireworks. and germany shutting its borders to british travelers. and with millions of americans already on the road for the holiday, the tsa screening more than 4 million people since friday alone. many now forced to make the difficult decision of whether to travel this holiday. breaking news in washington. massachusetts senator elizabeth warren announcing just moments ago she has tested positive for covid with a breakthrough case. she says she is experiencing mild symptoms. this, as west virginia senator joe manchin delivered a potentially fatal blow to president biden's domestic agenda. announcing he is a "no" on the build back better plan. manchin saying he has major concerns about the price tag. the white house seemingly blindsided, calling the move a