[Leader]

I agree with what you're saying in the letter, but what are you trying to accomplish? If you’re trying to convince him, your tone is way too confrontational. You're basically trying to take his head off. There's no way he knows as much about this stuff as you. You could probably convince him the party was wrong on this issue if you calmly explain the facts. A letter like this is likely to harden his position however because he'll fell like he's under attack and find some reason in his own mind to dismiss your arguments.