Why was there not a significant metis population in the United States?

Answer 1

the metis were out casts of other native tribes for one reason or another usually because they were mixed bloods and not accepted at first and they just gathered and since they (to the government ) were not an acctual tribe they were not recognized and still are notto this day although they fight fo recognition and i think they deserve it there is a population of metis in the u.s. but since they are not recognized no one knows

Answer 2

It depends on what you consider to be 'significant' and who you consider to be metis. Strictly speaking the metis were offspring of one white parent and one First Nations parent, and the terminology referred to Canadians. So the reason there was not a significant metis population in the United States was that there were not that many children whose parents were a mixture of white Canadians and First Nations.
If you broaden the term to include whites from the United States, as well as Canada, you change the parameters and come up with a very different picture. There were, and are, numbers of people who can claim metis heritage.

Answer 3

Because nobody knows what a metis is. At least I don't.