There's been a larger focus during the Biden administration on supporting indigenous peoples and improving and reforming the relationship between the US Federal government and these peoples. His administration appointed Deb Haaland (
https://en.wikipedia.org/wiki/Deb_Haaland) as the first Native American Secretary of the Interior. Interior is in charge of the Bureau of Indian Affairs and she's been leveraging her position to tackle some of those exact efforts you mentioned.
In March of 2023 last year she announced $25,000,000 for bison restoration efforts which admittedly is not enough but it's better than previous administrations have managed. (
https://apnews.com/article/bison-restoration-tribes-haaland-...)