An initial attempt:
('band council':ab,kw,ti OR 'first peoples':ab,kw,ti OR
'first people':ab,kw,ti OR 'native american*':ab,kw,ti OR 'áa tlein
kwáan':ab,kw,ti OR abenaki:ab,kw,ti OR ahousaht:ab,kw,ti OR kelsemeht:ab,kw,ti
OR aitchelitz:ab,kw,ti OR aleut:ab,kw,ti OR algonquin:ab,kw,ti OR
algonkian:ab,kw,ti OR anishinaabe:ab,kw,ti OR assiniboine:ab,kw,ti OR
athapaskan:ab,kw,ti OR atlin:ab,kw,ti OR 'bella bella':ab,kw,ti OR 'bella
coola':ab,kw,ti OR beothuk:ab,kw,ti OR blackfoot:ab,kw,ti OR burrard:ab,kw,ti
OR cayuga:ab,kw,ti OR chawathil:ab,kw,ti OR cheam:ab,kw,ti OR chehalis:ab,kw,ti
OR cheklesahht:ab,kw,ti OR chilcotin:ab,kw,ti OR chipewyan:ab,kw,ti OR
clayoquot:ab,kw,ti OR clemclemaluts:ab,kw,ti OR comiaken:ab,kw,ti OR
comox:ab,kw,ti OR coquitlam:ab,kw,ti OR cowichan:ab,kw,ti OR cree:ab,kw,ti OR
crees:ab,kw,ti OR dakelh:ab,kw,ti OR 'dane zaa':ab,kw,ti OR 'deisleen
kwáan':ab,kw,ti OR delewares:ab,kw,ti OR dene:ab,kw,ti OR ditidaht:ab,kw,ti OR
'dunne za':ab,kw,ti OR ehattesaht:ab,kw,ti OR eskimo:ab,kw,ti OR
esquimalt:ab,kw,ti OR euclataws:ab,kw,ti OR 'first nation':ab,kw,ti OR 'first
nations':ab,kw,ti OR gitxsan:ab,kw,ti OR gitxsanimaax:ab,kw,ti OR
guyohkohnyo:ab,kw,ti OR 'haad kil':ab,kw,ti OR haida:ab,kw,ti OR
haidan:ab,kw,ti OR haisla:ab,kw,ti OR halkomelem:ab,kw,ti OR halqemeylem:ab,kw,ti
OR hän:ab,kw,ti OR haudenosaunee:ab,kw,ti OR heiltsuk:ab,kw,ti OR
henaksiala:ab,kw,ti OR hesquiaht:ab,kw,ti OR hinupsum:ab,kw,ti OR
homalco:ab,kw,ti OR hulquminum:ab,kw,ti OR hunquminum:ab,kw,ti OR
hupacasath:ab,kw,ti OR huron:ab,kw,ti OR 'huu ay aht':ab,kw,ti OR
hwlitsum:ab,kw,ti OR hwulqwselu:ab,kw,ti OR hydin:ab,kw,ti OR innu:ab,kw,ti OR
inuit:ab,kw,ti OR iroquois:ab,kw,ti OR iroquoian:ab,kw,ti OR kainai:ab,kw,ti OR
kaska:ab,kw,ti OR katzie:ab,kw,ti OR khenipsen:ab,kw,ti OR kilpahlas:ab,kw,ti
OR kimsquit:ab,kw,ti OR kitamaat:ab,kw,ti OR klahoose:ab,kw,ti OR
klallam:ab,kw,ti OR koksilah:ab,kw,ti OR kootenay:ab,kw,ti OR koskimo:ab,kw,ti
OR ktunaxa:ab,kw,ti OR kutchin:ab,kw,ti OR kutenaian:ab,kw,ti OR
kwakiutl:ab,kw,ti OR kwakwaka*:ab,kw,ti OR kwantlen:ab,kw,ti OR kwatna:ab,kw,ti
OR 'kwaw kwaw apilt':ab,kw,ti OR kwiakah:ab,kw,ti OR kwikwetlem:ab,kw,ti OR
kyuquot:ab,kw,ti OR labrador:ab,kw,ti OR 'laich kwil tach':ab,kw,ti OR
lamalcha:ab,kw,ti OR lamalchi:ab,kw,ti OR lekwungen:ab,kw,ti OR lenape:ab,kw,ti
OR lillooet:ab,kw,ti OR loucheaux:ab,kw,ti OR lroquoian:ab,kw,ti OR
lummi:ab,kw,ti OR malahat:ab,kw,ti OR maliseet:ab,kw,ti OR matsqui:ab,kw,ti OR
metis:ab,kw,ti OR micmac:ab,kw,ti OR mississaugas:ab,kw,ti OR mohawk:ab,kw,ti
OR mowachaht:ab,kw,ti OR muchalaht:ab,kw,ti OR munsee:ab,kw,ti OR
musqueam:ab,kw,ti OR nakoda:ab,kw,ti OR namgis:ab,kw,ti OR nanaimo:ab,kw,ti OR
nanoose:ab,kw,ti OR naskapi:ab,kw,ti OR nequatque:ab,kw,ti OR nicola:ab,kw,ti
OR athapaskans:ab,kw,ti OR nimpkish:ab,kw,ti OR nipissing:ab,kw,ti OR
nootka:ab,kw,ti OR nuchatlaht:ab,kw,ti OR 'nuu chah nulth':ab,kw,ti OR
nuxálk:ab,kw,ti OR odawa:ab,kw,ti OR ohiaht:ab,kw,ti OR 'oji cree':ab,kw,ti OR
ojibwa:ab,kw,ti OR okanagan:ab,kw,ti OR onayotekaono:ab,kw,ti OR
oneida:ab,kw,ti OR onondaga:ab,kw,ti OR onondowahgah:ab,kw,ti OR
onundagaono:ab,kw,ti OR opetchesaht:ab,kw,ti OR ottawa:ab,kw,ti OR
owekeeno:ab,kw,ti OR pacheedaht:ab,kw,ti OR passamaquoddy:ab,kw,ti OR
pauquachin:ab,kw,ti OR peigan:ab,kw,ti OR penelakut:ab,kw,ti OR pentlatch:ab,kw,ti
OR petun:ab,kw,ti OR popkum:ab,kw,ti OR potawatomi:ab,kw,ti OR
puntledge:ab,kw,ti OR qualicum:ab,kw,ti OR quamichan:ab,kw,ti OR sahtu:ab,kw,ti
OR salish:ab,kw,ti OR salishan:ab,kw,ti OR sarcee:ab,kw,ti OR
saulteaux:ab,kw,ti OR scowlitz:ab,kw,ti OR secwepemc:ab,kw,ti OR
sekani:ab,kw,ti OR semahquam:ab,kw,ti OR semiahmoo:ab,kw,ti OR
shishalh:ab,kw,ti OR shuswap:ab,kw,ti OR siksika:ab,kw,ti OR sinixt:ab,kw,ti OR
siouan:ab,kw,ti OR skatin:ab,kw,ti OR skawahlook:ab,kw,ti OR skowkale:ab,kw,ti
OR skway:ab,kw,ti OR slavey:ab,kw,ti OR sliammon:ab,kw,ti OR 'snaw naw
as':ab,kw,ti OR snokomish:ab,kw,ti OR snuneymuxw:ab,kw,ti OR somena:ab,kw,ti OR
songhees:ab,kw,ti OR songish:ab,kw,ti OR sooke:ab,kw,ti OR soowahlie:ab,kw,ti
OR squamish:ab,kw,ti OR squiala:ab,kw,ti OR stuie:ab,kw,ti OR sumas:ab,kw,ti OR
tahltan:ab,kw,ti OR tallheo:ab,kw,ti OR tasttine:ab,kw,ti OR 'tla o qui aht':ab,kw,ti OR tlicho:ab,kw,ti OR
tlingit:ab,kw,ti OR toquaht:ab,kw,ti OR tsartlip:ab,kw,ti OR tsawout:ab,kw,ti
OR tsawwassen:ab,kw,ti OR tseshaht:ab,kw,ti OR tsetsaut:ab,kw,ti OR
tseycum:ab,kw,ti OR tsimshian*:ab,kw,ti OR tsleil:ab,kw,ti OR tutchone:ab,kw,ti
OR tzeachten:ab,kw,ti OR uchucklesaht:ab,kw,ti OR ucluelet:ab,kw,ti OR
wakashan:ab,kw,ti OR waututh:ab,kw,ti OR weewaikai:ab,kw,ti OR
wetsuweten:ab,kw,ti OR wewaykum:ab,kw,ti OR wuikinuxv:ab,kw,ti OR
wyandot:ab,kw,ti OR yakweakwioose:ab,kw,ti OR yellowknive*:ab,kw,ti OR
yuculta:ab,kw,ti OR yuułu*:ab,kw,ti OR ((gwich NEXT/2 in):ab,kw,ti) OR ((k
NEXT/2 omoks):ab,kw,ti) OR ((kanien NEXT/2 kéhaka):ab,kw,ti) OR ((kwak NEXT/2
wala):ab,kw,ti) OR (('lheidli t' NEXT/2 enneh):ab,kw,ti) OR ((l NEXT/2 uml
NEXT/2 umuluts):ab,kw,ti) OR ((leq NEXT/2 á NEXT/2 mel):ab,kw,ti) OR ((lil
NEXT/2 wat):ab,kw,ti) OR ((me NEXT/2 tis):ab,kw,ti) OR ((mi NEXT/2
kmaq):ab,kw,ti) OR ((nisga NEXT/2 a):ab,kw,ti) OR ((nlaka NEXT/2
pamux):ab,kw,ti) OR ((quw NEXT/2 utsun):ab,kw,ti) OR ((qwum NEXT/2
yiqun):ab,kw,ti) OR ((s NEXT/2 amuna):ab,kw,ti) OR ((shxw NEXT/2 ow NEXT/2
hamel):ab,kw,ti) OR ((ska NEXT/2 'ruh reh'):ab,kw,ti) OR ((sm NEXT/2
algyax):ab,kw,ti) OR ((sq NEXT/2 éwlets):ab,kw,ti) OR ((st NEXT/2 at NEXT/2
imc):ab,kw,ti) OR ((stl NEXT/2 atl NEXT/2 imx):ab,kw,ti) OR ((sto NEXT/2
lo):ab,kw,ti) OR ((sts NEXT/2 ailes):ab,kw,ti) OR ((t NEXT/2 souke):ab,kw,ti)
OR ((tl NEXT/2 ulpalus):ab,kw,ti) OR ((tsilhqot NEXT/2 in):ab,kw,ti) OR ((tsuut
NEXT/2 ina):ab,kw,ti) OR ((wet NEXT/2 suwet):ab,kw,ti) OR ((xa NEXT/2
xtsa):ab,kw,ti) OR (((bearlake OR beaver OR hare OR 'campbell river' OR 'cape mudge' OR
delaware OR 'new westminster' OR 'seabird island*' OR sechelt OR sioux OR stoney OR tagish OR tuscarora ) NEXT/2 (people OR people OR
band OR bands OR indian* OR nation OR nations OR tribe OR tribes)):ab,kw,ti) OR
(((blood OR carrier OR 'central coast' OR
plateau OR plains OR seneca OR subarctic OR teslin OR thompson OR tobacco
OR woodland*) NEXT/1 (indian* OR nation OR nations OR tribe OR
tribes)):ab,kw,ti) OR ('indian act':ab,kw,ti AND canad*:ab,kw,ti))