Technically the Crown didn't uphold their end of the treaties eg. resource profit sharing et al, so by law the treaties are void if we invoke that and the entire land reverts back to FN. Now the issue of enforcement, FNs do not have the army to force that issue, but some are working on their own court systems to sue the crown for that purpose rather than use federal courts. Either way the speed at which things are moving, i dont think that will matter or play out by the end-times