i can bypass the counter and go straight to my car. and i don't have to talk to any humans, unless i want to. and i don't. and national lets me choose any car in the aisle. control. it's so, what's the word?... sexy. go national. go like a pro. continuing our coverage of the race. a live event in washington, d.c. is about to get under way. democratic front-runner hillary clinton is scheduled to appear with 13 democratic senators, all of them women. every female democratic senator is expected to be on hand and to endorse hillary clinton except one. it's a big one. senator elizabeth warren. she has not endorsed clinton or anyone else for the democratic nomination. joining me politico ken fogle.