As First Nations launch the first constitutional challenge against federal Bill C-5 and Ontario’s Bill 5 — sweeping laws to fast-track mines and major infrastructure — legal experts say the governments’ refusal to consult has left Indigenous communities with no other option and more court battles are likely ahead.

Nine Ontario First Nations asking for an injunction against a pair of federal and provincial bills meant to fast-track infrastructure projects revealed more details about constitutional challenges against those measures at Queen's Park on Wednesday.

Lawyers for the Indigenous groups say in a legal filing that the two laws ‘violate the constitutional obligation of the Crown’ and want both struck down