This is right from the Y2Y webpage:
The Yellowstone to Yukon Conservation Initiative (Y2Y) is committed to the long-term ecological health of wildlife populations and wildlife habitat within the Yellowstone to Yukon region.
Within this context, Y2Y supports hunting, trapping, fishing and gathering, recognizing that these activities:
are an important part of social, cultural histories and traditions
are part of the economy and food security of the Yellowstone to Yukon region
can help to maintain or manage fish and wildlife population health
are generally sustainable when:
the rules and regulations of federal, Indigenous, and provincial/state/territorial governments concerning access and harvest numbers are informed by the best available evidence, including science and Indigenous and local knowledge, and
hunters, trappers and anglers follow applicable rules and regulations.
With respect to Indigenous Peoples, Y2Y recognizes that hunting, trapping, fishing and gathering are long-standing cultural and spiritual practices that are the subject of treaty and/or constitutionally protected rights.
With respect to hunting by non-Indigenous Peoples, Y2Y:
supports fair chase principles as an important part of an ethical framework for hunting and opposes hunting of captive game animals.
Y2Y also recognizes
the legitimacy of temporarily or permanently setting aside selected areas in which hunting, fishing, or trapping are not permitted, based on science and Indigenous and local knowledge, to help protect wildlife populations and their genes, and to act as source populations for the broader landscape
that ecologically healthy landscapes should generally be able to support sustainably managed and regulated hunting, trapping, fishing, and gathering.
Last revised: December 2020
That took all of 15 seconds to look up. I suggest all interested people go check out the Y2Y website:
https://y2y.net/about/vision-mission/
Nothing there about only allowing natives to hunt.