Can a native from one tribe move to another?
Absolutely. Nowadays you’ll find there are a lot of Natives who are from several different tribes.
Often, the migration of people from one tribe to another might be propelled by one’s interest in finding a partner from a different tribe due to being from a small community, or wanting to experience something new, but still have the Indigenous connection, or to be near other family or friends.
There are a lot of different reasons folks might move from one tribe to another. It comes down to individual choice.
Hope this helps.