Pete Buist, the eastern boundary of Denali National Park and Preserve was not fixed by biological realities -- it was fixed by land ownership.  When ANILCA passed in 1980, the eastern boundary of Denali could not be moved further east by federal legislation, because the land to the east was (and is) owned by the State of Alaska.  

The easterly boundary of DNP was not establish with any recognition of the winter migratory range of Denali's wolves, following the caribou and other food sources.  That's why there needs to be a buffer that encompasses these state lands.  A simple solution that the BoG once implemented, but now refuses to consider despite strong public support for it.

i was involved wit the enactment of ANILCA and have been a member of the Board of Game, so I think I have a pretty good perspective on this issue.