bond. >> reporter: let's just say that during the presidential campaign, progressives were skeptical about joe biden's big tint. >> progressives, moderates, conserve tiffs. >> reporter: but now, guess who is firmly inside it? >> as somebody who wrote a book called outsider in the house, it is a strange experience to be having the kinds of influence we have now. >> reporter: strange, especially for two men with decades of hard-held, long standing disagreements. >> i believe in medicare for all. he is who conservative than i am, obviously. but on the other hand, he is not only a smart guy. he is a good politician who has a sense of where people are at and what is possible. i think he understands that at this particular moment in american history, you have got to go big, not small. >> reporter: and five months into his presidency, biden has