It's simple, really. Follow the money.
Now, in this case, it's not a hell of a lot of money, but after reading a post in
Yellowstone Country Fly Fishing about a Montana state representative who's trying to undo much of the good that was done a couple years back, when the state Legislature finally cleared up exactly what "public access" was in Montana, even a little bit of money can make some folks undertake foolish errands.
So, here's what's happening (the short version). Rep. Jeff Welborn, a Republican rancher from Dillon, Montana, is trying to hamstring the state's incredibly foresighted public access law that allows anglers to follow navigable waterways on foot, so long as they stay within the high-water mark of those streams and access them from public rights of way (like a highway bridge, for instance). The big argument a couple years back was really over what constituted waterways, and what were deemed private "ditches" and off limits to the wandering fishers.
After years of legal wrangling that involved folks like pop-rocker Huey Lewis and his claim that Mitchell Slough on the Bitterroot River that runs through his property is actually a private impoundment (it ain't, Huey... you may believe in the Power of Love, but you apparently couldn't give a rat's ass about public access), the Legislature and then-state Rep. Kendall Van Dyk, a Democrat from Billings, made it clear what constituted public access and what didn't.