Couple comments.
First, those that are saying hunting groups, organization, and individuals should stay out of the "politics" of these type of sportsmen's related issues are not thinking clearly. News flash, public lands, wildlife, etc. are POLITICAL in nature, just the way it is. Sitting on the side-lines because someone from afar doesn't think you, or your sportsmen's groups, should stay out of it, are just wrong. I also find it lame that people threaten those groups to "not join", or to "not visit this site" when a position is taken. I say good, leave, and don't let the door hit you on the ass on the way out...I have bigger things to worry about than a couple ill informed numbskulls trying to strong arm my involvement in issues that impact MY wildlife, MY hunting, and MY public lands. What good is an organization that never takes a position on anything because that position may hurt some feelers?
As a friend said one time regarding all these type of issues, " if you aren't at the table, you're on the menu".
I choose to be at the table, and I expect the groups and organizations that I'm a part of to be there as well.
As to this specific letter, its a good letter that I would sign on to in a heartbeat (matter of fact the group I chair DID sign on). There has been a lot of collaboration done on the sage grouse issue, probably the classic example of what good collaboration looks like. The Governors, public, industry, etc. etc. have been doing great things to ensure that sage grouse stay off the ESL. What's not to like?
The only thing Zinke should be "reviewing", are his notes he should be taking on what has, and is, happening on the sage grouse issue and how well all the parties involved have worked together to reach a desired goal. A perfect example of how the collaborative process can, and should, work.
His review of the sage grouse issue is looking for a solution to his problem...that he cant accept that things can be solved without his meddling.