Soon after my original post, Elizabeth Warren’s law license problem, Mark Thompson at The League of Ordinary Gentlemen wrote a post taking an opposite view, No, Elizabeth Warren Did Not Engage in the Unauthorized Practice of Law.

That post by Thompson was cited far and wide, including at Memeorandum as well as at friendly conservative blogs which wanted to present the case for Warren to provide balance.

In light of my post this morning that Warren represented a Massachusetts client in Massachusetts on an issue related to Massachusetts law, Thompson has concluded in a new post today:

Professor Jacobson has uncovered this morning a case in which Elizabeth Warren entered an appearance in a federal appellate court as a representative of a Massachusetts client in a case that appears to have clearly implicated Massachusetts law. Although this is still a federal appellate court, because we’re dealing with a Massachusetts client and issues of Massachusetts law, this looks really, really bad for Professor Warren. With this bombshell, I would no longer view the case against her as weak.

Thompson also has updated his original post:

UPDATE 4 9/27: Professor Jacobson has uncovered new facts that I view as a gamechanger. Although I stand by my above analysis as applied to the facts known at the time, Professor Jacobson’s discovery this morning answers my objections to his arguments.

Making progress.

More to come.

Update: Thompson emails, for attribution:

Professor Jacobson: I couldn’t figure out how to leave this as a comment at your site, but I wanted to let you know ASAP that I concede that your discovery this morning answers all of my arguments and is a gamechanger. Your diligence in investigating this matter is commendable. Regards, Mark Thompson

Jack Marshall at Ethics Alarms adds: