Believe me, the man is thick ... you would be wasting your time ... he is dimly aware that the EU might have something to do with this, but has been misled into "thinking" that this is an area of national competence ... this is the relevant part of his speech ...
Notwithstanding my comments, the reality is that the Government’s Austrian defence is a red herring, given that the European Commission has clearly stated that a ban is a matter for member states alone. It is an issue that English courts decide. Surely that is something to celebrate in this age of judicial creep from Europe, and also something to exercise and implement. A ban can be introduced in an English court— without waiting for other European capitals to decide and without interference from Europe, which makes a refreshing change..
Well, hang on a second; to the original two options of stupid or dishonest, we can now add a third option of misinformed. (Yes, it is probably a subset of the "stupid" option, but we are where we are.)
If someone has told this guy that it is definitely not EU-related, and he then finds out that it is EU-related, then - however thick he may be - there is at least some chance that he will be even more annoyed, both about the underlying issue and about the incompetence/dishonesty of whoever so informed him.
Both of these would be worthwhile outcomes, I would have thought.
More generally ...
Richard, you have to accept that you probably score above average both on general IQ, and on specific knowledge of how the EU is taking over ( /has taken over) our parliament. Hence, if you want to do anything about it, then it is pretty much inevitable that you will have to find a way to deal with people who score lower than you on both these measures (and doubtless a host of others).
In particular, you need to be able to deal with people whose only relevance to the universe is that they are better than you at getting elected to parliament. (Don't worry, you can always wash your hands afterwards.)
I can quite understand that it must be bloody depressing writing ten letters and getting nowhere. You have to hope that the eleventh letter manages to do some good. ( Or one hundred letters before the hundred-and-first, or whatever.)
It just seems to me that if this guy is beating his chest about this subject, there is a better than usual chance that a letter on this might fall on fertile ground.
(Insert jokes about bovine fertiliser here ...)