This video clip, below, of Barr addressing all this is priceless. You need to watch it to get the full effect. In responding to questions about the letter, Barr offers his usual laconic, two words or less, responses. Yes, Mueller asked for the letter. The fun part is when Barr is asked if he has any reaction to being held in contempt of Congress. He first gives his usual, straight-faced, 'No,' then reconsiders and breaks into a big grin: "Goes with the territory--these days."
Could anything speak more loudly to the regard he holds Congressional Dems in? And does it suggest that he knows their day is coming?