So Democratic Judiciary Committee chair Jerry Nadler responded to Barr saying that he wasn’t goint to show up tomorrow.
He is threatening to hold Barr in contempt: https://www.tranganhnam.xyz/2019/05/jerry-nadler-ag-william-barr-wont.html
However, when it came to hitting Barr with a subpoena, Nadler was non-committal about it.
So, it’s kind of a showdown. Will Barr back down and show up? It sounds like Nadler will give him a few days to consider. But they can then hold him in contempt, and if that doesn’t work, hit him with another subpoena. But if he ignores that…. then what?