In the context of lacrosse, it's sad that a First Nations team wouldn't be welcome to compete, since they are arguably closer to the game and more passionate about it than any other nation.

Fun fact, for those unfamiliar with lacrosse: Canada has two national sports: hockey is our national winter sport, while lacrosse is our national summer sport.[1] Most Canadians have probably still never played it, which is a shame because it's at least as amazing to watch or play as hockey. Field or box.

[1] https://laws-lois.justice.gc.ca/eng/acts/N-16.7/page-1.html