Very nice chapter.
I can't help recall in history class how in ancient/olden times, one way to stop a bill from becoming law was to kill the sponsor of the bill (even just a regular Senator), either through assassination or suicide. The old phrase "Champion of the Law" was just that, someone that stood up for a certain law/bill. If no one stood up, then it wasn't a law.
Hence, in the back of my mind, I have this scene in my head, where Harry is at the Wizengamot, and someone proposes a marriage contract to him. Harry calms asks if this person is wishing to be the "champion" of this "law", and knows the consequences of it. This people does not, or feels that Riddle will protect him. Yes, I see Harry winning any duel against any Wizengamot member. Which should stop any but the foolish from prosing again for a marriage contract for Harry. At least, without him there... Which point, in this case, I can see Harry making his displeasure known and felt throughout the Wizengamot and beyond. If they wish to play with the Old Laws, then let them feel and truly live by them. Duels to the death and all.