Using their get out of jail free card?
https://www.zerohedge.com/news/2018-12-28/harris-booker-and-warren-announce-2020-bids-next-month-nbc
Using their get out of jail free card?
https://www.zerohedge.com/news/2018-12-28/harris-booker-and-warren-announce-2020-bids-next-month-nbc