Each member of the wolf pack is of Native decent. Spencer is Lakota (Sioux), Pelletier is Cree-Metis, Meraz is Purepecha (Tarasco), Gordon is Hualapai, and Houseman, who was discovered at an open casting call, is Cree. Casting of the wolf pack was overseen by award-winning casting director Rene Haynes who is well-known for her work on Native projects ranging from DANCES WITH WOLVES to BURY MY HEART AT WOUNDED KNEE.
Let's note that Summit was basically shamed into hiring Native actors. In my opinion, of course, since I'm not privy to the inner workings of the Twilight movies.
Making up for its previous mistakes, look how proudly it's touting the Native heritage of the "Wolf Pack." And how it doesn't mention Lautner's minuscule Native heritage.
Also note that referring to these Indians as the Wolf Pack will reinforce the notion that they're beast-like.
For more on the subject, see Quileute Werewolves in Twilight.
Below: "Where's my wig so I can look like a real Indian?"