There is on definate place you could use that. I just started looking at languages for NAN for my Underworld Face. To be able to deal with smuggling from any NAN you languages need to be through the roof, depending on GM interpretation.
Given that the Ghost Dance was all about tossing back (lets drop nicities this morning) the "whitey invaders", having the original native languages be very important in these regions makes sense. I then did a bit of internet sleuthing on the area of Salish-Shidhe. There are at least two major -groups- of languages, first the Wakashan group (actually divided itself into northern/southern subgroups) covers the coast of British Columbia from above the Salish-Shidhe (likely covering all of Tsimshian), down onto Vancouver Island, and on the Olympic Peninsula of Washington State. The second are the Salish languages from the western portion of Salish-Shidhe.
Just imagine the Athabascan Council which extends from the heart of Cree up to the arctic circle.
Incidentally, for an idea of how a NAN central government -might- work, take a peek at how the government of one of of Canada's northern terrorries is structured:
http://www.assembly.gov.nt.ca/VisitorInfo/...ment/index.html