work. senator bernie sanders had a campaign stop in central california last night and another in los angeles today. california will be a big lift for a birdie who doubled his campaign in california this week. here he -- he and senator warren have been at odds with their dueling medicare for all plan bernie promising immediate action. >> on her first week in office we are going to introduce medicare for all, single-payer legislation. >> senator kamala harris campaign touting the endorsement of the 10,000 member strong united farm workers union a key endorsement for her struggling campaign. harris is one of 10 candidates who will take the stage in the next democratic debate which is this wednesday in atlanta. jon: kristina coleman, thank you. former president barack obama out with a warning for some 2020 democratic candidate suggesting