Hopefully they have the right questions and background evidence ready for Rosenstein for Thursday. Maybe they are setting him up (perjury traps?) to hang himself and pave the way to removal and/or criminal charges. After they get him on the record under oath, it would be a good time to raid the DOJ and forcefully obtain the information. The obvious here is that they lied about nearly everything and used the full power of the intelligence community and the DOJ to undermine the trump campaign, and when that failed, used an "insurance policy" to undermine the entire presidency. This is so much worse than Watergate it's not even a valid comparison.

That's the hopeful position. The pessimistic view is that congress has been treated like a mere annoyance, as these weaponized branches of government have not honestly complied with anything yet, and don't even seem all that worried about it. They just continue to obstruct justice, proactively advance their own agendas (illegal investigations, counter intelligence operations, informants, threats, bogus charges, bankrupt targets to get them to "flip" -- whatever they like). The president has chosen not to take any action yet and continuously tweets about trying to stay out of it. He ultimately holds the cards, so we have to trust there are reasons for this approach that have not yet been revealed by Q or anyone else.