Bernie is a wicked bolschewik. But he has not lied, even if it becomes uncomfortable for him (taxation).
Warren has lied before. Not once. Taxation of the middle class, Indian heritage, fundraising from rich people.
Because of this I think Warren is lying.
I think it is irrelevant if someone thinks either is lying. It matters if they think the two are bastions of morality, so such a non-genius will likely not survive their first encounter with a ziploc bag or spontaneously forget to breathe.
It's obviously political, but say it was 100% true. Do you actually think you're gaining something by this? What conceivable benefit do either have from this? They look like a bunch of kids squabbling. Maybe Bernie thinks that a woman can't win this election because the electorate won't vote for one. I don't think a Jew can win because of the number of people in America that hate Jews. Doesn't mean I hate Jews or Bernie hates women, it's an opinion on the electorate. It can be discussed. Instead, by tattling on Bernie to the public, she looks pathetic, he squabbled back and they both look immature and so very weak. The Sandernistas can be crushed if their leader violates a supposed feminist inorthodoxy, and Chief Warren's tribe have only their sensitivity and victimhood as a weapon. What if say the Italian or Greek leader expresses a debatable opinion on women she doesn't like? She'll hurt her own party and image to attack someone for it, and she likes those infinitely more than she likes America.
This reminds me entirely of the schoolyard fight between Rubio and Trump over the size of Trump's hands.